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Volume 64, Number 1, January, 1975R. C. Yu and R. P. Bunge Damage and repair of the peripheral myelin sheath and node of Ranvier after treatment with trypsin . . . . . . . . . 1 B. O. Spurlock and M. J. Cormier A fine structure study of the anthocodium in \bionameRenilla mülleri. Evidence for the existence of a bioluminescent organelle, the luminelle 15 P. G. Plagemenn and D. P. Richey and J. M. Zylka and J. Erbe Cell cycle and growth stage-dependent changes in the transport of nucleosides, hypoxanthine, choline, and deoxyglucose in cultured Novikoff rat hepatoma cells 29 R. W. Rubin and G. D. Weiss Direct biochemical measurements of microtubule assembly and disassembly in Chinese hamster ovary cells. The effect of intercellular contact, cold, D2O, and N6,O2'-dibutyryl cyclic adenosine monophosphate . . . . . . . . . . . . . 42 R. R. Warner and J. R. Coleman Electron probe analysis of calcium transport by small intestine . . . . . . 54 R. S. Molday and W. J. Dreyer and A. Rembaum and S. P. Yen New immunolatex spheres: visual markers of antigens on lymphocytes for scanning electron microscopy . . . . . . . . . . 75 R. Hand Regulation of DNA replication on subchromosomal units of mammalian cells 89 S. L. Tamm and T. M. Sonneborn and R. V. Dippell The role of cortical orientation in the control of the direction of ciliary beat in Paramecium . . . . . . . . . . . . . 98 K. E. Williams and E. M. Kidston and F. Beck and J. B. Lloyd Quantitative studies of pinocytosis. I. Kinetics of uptake of (125I)polyvinylpyrrolidone by rat yolk sac cultured in vitro . . . . . . . . . 113 K. E. Williams and E. M. Kidston and F. Beck and J. B. Lloyd Quantitative studies of pinocytosis. II. Kinetics of protein uptake and digestion by rat yolk sac cultured in vitro . . . 123 L. Weiss and G. Poste and A. MacKearnin and K. Willett Growth of mammalian cells on substrates coated with cellular microexudates. I. Effect on cell growth at low population densities . . . . . . . . . . . . . . . 135 R. C. Weisenberg and A. C. Rosenfeld In vitro polymerization of microtubules into asters and spindles in homogenates of surf clam eggs . . . . . . . . . . . 146 J. W. Fuseler Mitosis in Tilia americana endosperm . . 159 D. Moran and R. W. Rice An ultrastructural examination of the role of cell membrane surface coat material during neurulation . . . . . . 172 J. D. Castle and J. D. Jamieson and G. E. Palade Secretion granules of the rabbit parotid gland. Isolation, subfractionation, and characterization of the membrane and content subfractions . . . . . . . . . . 182 M. L. Meistrich and B. O. Reid and W. J. Barcellona Meiotic DNA synthesis during mouse spermatogenesis . . . . . . . . . . . . 211 E. Gruenstein and A. Rich and R. R. Weihing Actin associated with membranes from 3T3 mouse fibroblast and HeLa cells . . . . 223 W. T. Mason and K. J. Bighouse Correlation of rhodopsin biogenesis with ultrastructural morphogenesis in the chick retina . . . . . . . . . . . . . . 235 T. Nagano and F. Suzuki Microtubules with 15 subunits in cockroach epidermal cells . . . . . . . 242 G. Giannattasio and A. Zanini and J. Meldolesi Molecular organization of rat prolactin granules: in vitro stability of intact and ``membraneless'' granules . . . . . 246 M. L. Pardue and T. C. Hsu Locations of 18S and 28S ribosomal genes on the chromosomes of the Indian muntjac 251 R. T. Briggs and M. L. Karnovsky and M. J. Karnovsky Cytochemical demonstration of hydrogen peroxide in polymorphonuclear leukocyte phagosomes . . . . . . . . . . . . . . . 254 J. M. Hill Ribosomal RNA metabolism during renal hypertrophy. Evidence of decreased degradation of newly synthesized ribosomal RNA . . . . . . . . . . . . . 260
Greenberg Messenger RNA metabolism of animal cells: possible involvement of untranslated sequences and mRNA-associated proteins . . . . . . . . 269 L. G. Tilney Actin filaments in the acrosomal reaction of Limulus sperm. Motion generated by alterations in the packing of the filaments . . . . . . . . . . . . 289 M. K. Nemanic and D. P. Carter and D. R. Pitelka and L. Wofsy Hapten-sandwich labeling. II. Immunospecific attachment of cell surface markers suitable for scanning electron microscopy . . . . . . . . . . 311 P. Gambetti and S. E. Erulkar and A. P. Somlyo and N. K. Gonatas Calcium-containing structures in vertebrate glial cells. Ultrastructural and microprobe analysis . . . . . . . . 322 Y. Kishida and B. R. Olsen and R. A. Berg and D. J. Prockop Two improved methods for preparing ferritin-protein conjugates for electron microscopy . . . . . . . . . . . . . . . 331 B. R. Olsen and R. A. Berg and Y. Kishida and D. J. Prockop Further characterization of embryonic tendon fibroblasts and the use of immunoferritin techniques to study collagen biosynthesis . . . . . . . . . 340 H. Glaumann and A. Bergstrand and J. L. Ericsson Studies on the synthesis and intracellular transport of lipoprotein particles in rat liver . . . . . . . . . 356 Y. Obara and H. Weinfeld and A. A. Sandberg Detection by means of cell fusion of macromolecular synthesis involved in the reconstruction of the nuclear envelope in mitosis . . . . . . . . . . . . . . . 378 D. Alder and M. A. Gorovsky Electrophoretic analysis of liver and testis histones of the frog Rana pipiens 389 A. H. Hale and J. L. Winkelhake and M. J. Weber Cell surface changes and Rous sarcoma virus gene expression in synchronized cells . . . . . . . . . . . . . . . . . 398 R. E. Stephens The basal apparatus. Mass isolation from the molluscan ciliated gill epithelium and a preliminary characterization of striated rootlets . . . . . . . . . . . 408 W. M. Bonner Protein migration into nuclei. I. Frog oocyte nuclei in vivo accumulate microinjected histones, allow entry to small proteins, and exclude large proteins . . . . . . . . . . . . . . . . 421 W. M. Bonner Protein migration into nuclei. II. Frog oocyte nuclei accumulate a class of microinjected oocyte nuclear proteins and exclude a class of microinjected oocyte cytoplasmic proteins . . . . . . 431 A. L. Hubbard and Z. A. Cohn Externally disposed plasma membrane proteins. I. Enzymatic iodination of mouse L cells . . . . . . . . . . . . . 438 A. L. Hubbard and Z. A. Cohn Externally disposed plasma membrane proteins. II. Metabolic fate of iodinated polypeptides of mouse L cells 461 U. P. Roos Mitosis in the cellular slime mold Polysphondylium violaceum . . . . . . . 480 C. Franzini-Armstrong and L. Landmesser and G. Pilar Size and shape of transverse tubule openings in frog twitch muscle fibers 493 R. D. Allen Evidence for firm linkages between microtubules and membrane-bounded vesicles . . . . . . . . . . . . . . . . 497 J. Bignon and P. Chahinian and G. Feldmann and C. Sapin Ultrastructural immunoperoxidase demonstration of autologous albumin in the alveolar capillary membrane and in the alveolar lining material in normal rats . . . . . . . . . . . . . . . . . . 503
J. E. Barker and W. F. Anderson and A. W. Nienhuis Hemoglobin switching in sheep and goats. V. Effect of erythropoietin concentration on in vitro erythroid colony growth and globin synthesis . . . 515 A. L. Olins and R. D. Carlson and D. E. Olins Visualization of chromatin substructure: upsilon bodies . . . . . . . . . . . . . 528 P. P. Silva and A. Martínez-Palomo and A. Gonzalez-Robles Membrane structure and surface coat of Entamoeba histolytica. Topochemistry and dynamics of the cell surface: cap formation and microexudate . . . . . . . 538 T. H. Norwood and W. R. Pendergrass and G. M. Martin Reinitiation of DNA synthesis in senescent human fibroblasts upon fusion with cells of unlimited growth potential 551 G. Shore and G. A. Maclachlan The site of cellulose synthesis. Hormone treatment alters the intracellular location of alkali-insoluble beta-1,4-glucan (cellulose) synthetase activities . . . . . . . . . . . . . . . 557 V. Iwanij and N. H. Chua and P. Siekevitz Synthesis and turnover of ribulose biphosphate carboxylase and of its subunits during the cell cycle of Chlamydomonas reinhardtii . . . . . . . 572 N. Simionescu and M. Siminoescu and G. E. Palade Permeability of muscle capillaries to small heme-peptides. Evidence for the existence of patent transendothelial channels . . . . . . . . . . . . . . . . 586 U. Pfeifer and H. Scheller A morphometric study of cellular autophagy including diurnal variations in kidney tubules of normal rats . . . . 608 A. Komiyama and S. S. Spicer Microendocytosis in eosinophilic leukocytes . . . . . . . . . . . . . . . 622 R. Nuccitelli and L. F. Jaffe The pulse current pattern generated by developing fucoid eggs . . . . . . . . . 636 G. C. Godman and A. F. Miranda and A. D. Deitch and S. W. Tanenbaum Action of cytochalasin D on cells of established lines. III. Zeiosis and movements at the cell surface . . . . . 644 W. A. Anderson and Y. H. Kang and E. R. DeSombre Endogenous peroxidase: specific marker enzyme for tissues displaying growth dependency on estrogen . . . . . . . . . 668 Y. H. Kang and W. A. Anderson and E. R. DeSombre Modulation of uterine morphology and growth by estradiol-17beta and an estrogen antagonist . . . . . . . . . . 682 W. A. Anderson and Y. H. Kang and E. R. DeSombre Estrogen and antagonist-induced changes in endometrial topography of immature and cycling rats . . . . . . . . . . . . 692 R. L. Murray and M. W. Dubin The occurrence of actinlike filaments in association with migrating pigment granules in frog retinal pigment epithelium . . . . . . . . . . . . . . . 705 J. A. Berliner Formation of enlarged mitochondria in a liver cell line in response to a synthetic glucocorticoid . . . . . . . . 711 E. A. Havell and J. Vilcek Inhibition of interferon secretion by vinblastine . . . . . . . . . . . . . . 716 G. L. Campbell and L. T. Goldstein and B. B. Knowles The use of flow microfluorimetry in the analysis of the phenotype expression of mouse histocompatibility antigens . . . 719 G. J. Dockray and C. R. Hopkins Caerulein secretion by dermal glands in \bionameXenopus laevis . . . . . . . . . 724 G. Zampighi and J. Vergara and F. Ramon On the connection between the transverse tubules and the plasma membrane in frog semitendinosus skeletal muscle . . . . . 734
R. E. Kellems and V. F. Allison and R. A. Butow Cytoplasmic type 80S ribosomes associated with yeast mitochondria. IV. Attachment of ribosomes to the outer membrane of isolated mitochondria . . . 1 K. H. Pfenninger and E. R. Rinderer Methods for the freeze-fracturing of nerve tissue cultures and cell monolayers . . . . . . . . . . . . . . . 15 B. A. Palevitz and P. K. Hepler Identification of actin in situ at the ectoplasm-endoplasm interface of Nitella. Microfilament-chloroplast association . . . . . . . . . . . . . . 29 A. Lemay and L. Jarett Pitfalls in the use of lead nitrate for the histochemical demonstration of adenylate cyclase activity . . . . . . . 39 H. F. Lodish and B. Small Membrane proteins synthesized by rabbit reticulocytes . . . . . . . . . . . . . 51 R. R. Gould The basal bodies of Chlamydomonas reinhardtii. Formation from probasal bodies, isolation, and partial characterization . . . . . . . . . . . . 65 C. Nist and K. Von Der Mark and E. D. Hay and B. R. Olsen and P. Bornstein and R. Ross and P. Dehm Location of procollagen in chick corneal and tendon fibroblasts with ferritin-conjugated antibodies . . . . . 75 F. Clemente and J. Meldolesi Calcium and pancreatic secretion. I. Subcellular distribution of calcium and magnesium in the exocrine pancreas of the guinea pig . . . . . . . . . . . . . 88 J. Hanas and G. Linden and K. Stuart Mitochondrial and cytoplasmic ribosomes and their activity in blood and culture form Trypanosoma brucei . . . . . . . . 103 Y. E. Rahman and B. J. Wright Liposomes containing chelating agents. Cellular penetration and a possible mechanism of metal removal . . . . . . . 112 S. de Petris Concanavalin A receptors, immunoglobulins, and theta antigen of the lymphocyte surface. Interactions with concanavalin A and with Cytoplasmic structures . . . . . . . . . . . . . . . 123 C. B. Lindemann and I. R. Gibbons Adenosine triphosphate-induced motility and sliding of filaments in mammalian sperm extracted with Triton X-100 . . . 147 U. Scheer and F. Trendelenburg and W. W. Franke Effects of actinomycin D on the association of newly formed ribonucleoproteins with the cistrons of ribosomal RNA in Triturus oocytes . . . 163 P. M. Elias and D. S. Friend The permeability barrier in mammalian epidermis . . . . . . . . . . . . . . . 180 E. Raviola and N. B. Gilula Intramembrane organization of specialized contacts in the outer plexiform layer of the retina. A freeze-fracture study in monkeys and rabbits . . . . . . . . . . . . . . . . 192 J. G. Schofield and L. Orci Release of growth hormone from ox pituitary slices after pronase treatment 223 P. R. Burton and R. E. Hinkley and G. B. Pierson Tannic acid-stained microtubules with 12, 13, and 15 protofilaments . . . . . 227 M. J. Karnovsky and G. B. Ryan Substructure of the glomerular slit diaphragm in freeze-fractured normal rat kidney . . . . . . . . . . . . . . . . . 233 W. L. Dentler and S. Granett and J. L. Rosenbaum Ultrastructural localization of the high molecular weight proteins associated with in vitro-assembled brain microtubules . . . . . . . . . . . . . . 237
U. Rutishauser and L. Sachs Cell-to-cell binding induced by different lectins . . . . . . . . . . . 247 A. L. Kierszenbaum and L. L. Tres Structural and transcriptional features of the mouse spermatid genome . . . . . 258 J. Croop and H. Holtzer Response of myogenic and fibrogenic cells to cytochalasin B and to colcemid. I. Light microscope observations . . . . 271 B. S. Spooner and G. W. Conrad The role of extracellular materials in cell movement. I. Inhibition of mucopolysaccharide synthesis does not stop ruffling membrane activity or cell movement . . . . . . . . . . . . . . . . 286 J. Glass and L. M. Lavidor and S. H. Robinson Studies of murine erythroid cell development. Synthesis of heme and hemoglobin . . . . . . . . . . . . . . . 298 R. S. Tuan and K. P. Chang Isolation of intracellular symbiotes by immune lysis of flagellate protozoa and characterization of their DNA . . . . . 309 P. M. Leuenberger and A. B. Novikoff Studies on microperoxisomes. VII. Pigment epithelial cells and other cell types in the retina of rodents . . . . . 324 P. N. Devreotes and D. M. Fambrough Acetylcholine receptor turnover in membranes of developing muscle fibers 335 H. J. Reimers and D. J. Allen and I. A. Feuerstein and J. F. Mustard Transport and storage of serotonin by thrombin-treated platelets . . . . . . . 359 P. A. Lawerence and S. M. Green The anatomy of a compartment border. The intersegmental boundary in Oncopeltus 373 H. Carlier and J. Bezard Electron microscope autoradiographic study of intestinal absorption of decanoic and octanoic acids in the rat 383 D. Granick Nucleolar necklaces in chick embryo fibroblast cells. I. Formation of necklaces by dichlororibobenzimidazole and other adenosine analogues that decrease RNA synthesis and degrade preribosomes . . . . . . . . . . . . . . 398 D. Granick Nucleolar necklaces in chick embryo fibroblast cells. II. Microscope observations of the effect of adenosine analogues on nucleolar necklace formation . . . . . . . . . . . . . . . 418 L. J. Romrell and M. R. Coppe and D. R. Munro and S. Ito Isolation and separation of highly enriched fractions of viable mouse gastric parietal cells by velocity sedimentation . . . . . . . . . . . . . 428 P. B. Armstrong and J. M. Lackie Studies of intercellular invasion in vitro using rabbit peritoneal neutrophil granulocytes (PMNS). I. Role of contact inhibition of locomotion . . . . . . . . 439 M. Cantin and S. Benchimol Localization and characterization of carbohydrates in adrenal medullary cells 463 K. Jimbow and T. B. Fitzpatrick Changes in distribution pattern of cytoplasmic filaments in human melanocytes during ultraviolet-mediated melanin pigmentation. The role of the 100-Angstrom filaments in the elongation of melanocytic dendrites and in the movement and transfer of melanosomes . . 481 S. J. Berry and E. Johnson Formation of temporary flagellar structures during insect organogenesis 489 R. B. Wallace and K. B. Freeman Selection of mammalian cells resistant to a chloramphenicol analog . . . . . . 492
D. L. Nanney Patterns of basal body addition in ciliary rows in \bionameTetrahymena . . 503 M. A. Lande and M. Adesnik and M. Sumida and Y. Tashiro and D. D. Sabatini Direct association of messenger RNA with microsomal membranes in human diploid fibroblasts . . . . . . . . . . . . . . 513 T. Kusamrarn and P. Sobhon and G. B. Bailey The mechanism of formation of inhibitor-induced ribosome helices in Entamoeba invadens . . . . . . . . . . . 529 T. Kusamrarn and K. Vinijchaikul and G. B. Bailey Comparision of the structure and function of polysomal and helical ribosomes from Entamoeba invadens . . . 540 E. Lazarides Tropomyosin antibody: the specific localization of tropomyosin in nonmuscle cells . . . . . . . . . . . . . . . . . 549 A. C. Breuer and C. N. Christian and M. Henkart and P. G. Nelson Computer analysis of organelle translocation in primary neuronal cultures and continuous cell lines . . . 562 J. Noseworthy and G. H. Smith and S. R. Himmelhoch and W. H. Evans Protein and glycoprotein electrophoretic patterns of enriched fractions of primary and secondary granules from guinea pig polymorphonuclear leukocytes 577 E. D. Salmon and G. W. Ellis A new miniature hydrostatic pressure chamber for microscopy. Strain-free optical glass windows facilitate phase-contrast and polarized-light microscopy of living cells. Optional fixture permits simultaneous control of pressure and temperature . . . . . . . . 587 E. D. Salmon Pressure-induced depolymerization of spindle microtubules. I. Changes in birefringence and spindle length . . . . 603 C. R. Hackenbrock and K. J. Miller The distribution of anionic sites on the surfaces of mitochondrial membranes. Visual probing with polycationic ferritin . . . . . . . . . . . . . . . . 615 H. Maruta and L. Goldstein The fate and origin of the nuclear envelope during and after mitosis in Amoeba proteus. I. Synthesis and behavior of phospholipids of the nuclear envelope during the cell life cycle . . 631
P. Drochmans and J. C. Wanson and R. Mosselmans Isolation and subfractionation on ficoll gradients of adult rat hepatocytes. Size, morphology, and biochemical characteristics of cell fractions . . . 1 J. C. Wanson and P. Drochmans and C. May and W. Penasse and A. Popowski Isolation of centrolobular and perilobular hepatocytes after phenobarbital treatment . . . . . . . . 23 C. M. Redman and D. Banerjee and K. Howell and G. E. Palade Colchicine inhibition of plasma protein release from rat hepatocytes . . . . . . 42 B. L. Zimmerman and M. O. Tso Morphologic evidence of photoreceptor differentiation of pinealocytes in the neonatal rat . . . . . . . . . . . . . . 60 U. Rutishauser and L. Sachs Receptor mobility and the binding of cells to lectin-coated fibers . . . . . 76 A. W. Schuetz Cytoplasmic activation of starfish oocytes by sperm and divalent ionophore A-23187 . . . . . . . . . . . . . . . . 86 K. D. Ley Detection of G1 proteins in Chinese hamster cells synchronized by isoleucine deprivation or mitotic selection . . . . 95 O. Durieu-Trautmann and J. Tavlitzki Reversible and permanent effects of the carbon sources and various antibiotics on the morphology and metabolic properties of Ustilago cynodontis cells 102 E. D. Salmon Pressure-induced depolymerization of spindle microtubules. II. Thermodynamics of in vivo spindle assembly . . . . . . 114 J. L. Wang and G. R. Gunther and G. M. Edelman Inhibition by colchicine of the mitogenic stimulation of lymphocytes prior to the S phase . . . . . . . . . . 128 K. T. Edds Motility in Echinosphaerium nucleofilum. I. An analysis of particle motions in the axopodia and a direct test of the involvement of the axoneme . . . . . . . 145 K. T. Edds Motility in Echinosphaerium nucleofilum. II. Cytoplasmic contractility and its molecular basis . . . . . . . . . . . . 156 H. Bauduin and C. Stock and D. Vincent and J. F. Grenier Microfilamentous system and secretion of enzyme in the exocrine pancreas. Effect of cytochalasin B . . . . . . . . . . . 165 M. E. Feigenson and H. P. Schnebli and M. Baggiolini Demonstration of ricin-binding sites on the outer face of azurophil and specific granules of rabbit polymorphonuclear leukocytes . . . . . . . . . . . . . . . 183 A. Krishan Rapid flow cytofluorometric analysis of mammalian cell cycle by propidium iodide staining . . . . . . . . . . . . . . . . 188 R. A. Rinaldi and B. Hrebenda Oriented thick and thin filaments in amoeba proteus . . . . . . . . . . . . . 193 D. Mazia and G. Schatten and W. Sale Adhesion of cells to surfaces coated with polylysine. Applications to electron microscopy . . . . . . . . . . 198 A. G. Yee and J. P. Revel Endothelial cell junctions . . . . . . . 200 G. Cleffmann Amount of DNA produced during extra S phases in \bionameTetrahymena . . . . . 204 H. C. Fertuck and W. Woodward and M. M. Salpeter In vivo recovery of muscle contraction after alpha-bungarotoxin binding . . . . 209 F. J. Prop Letters to the editor: Is the upper cell surface unable to support active cell movement in culture? . . . . . . . . . . 215 A. DiPasquale and P. B. Bell Letter: Comments on reported observations of cells spreading on the upper surfaces of other cells in culture 216 T. Elsdale and J. Bard Letter: Is stickiness of the upper surface of an attached epithelium in culture an indicator of functional insufficiency? . . . . . . . . . . . . . 218
B. A. Afzelius and R. Eliasson and O. Johnsen and C. Lindholmer Lack of dynein arms in immotile human spermatozoa . . . . . . . . . . . . . . 225 S. G. Lee and V. Littau and F. Lipmann The relation between sporulation and the induction of antibiotic synthesis and of amino acid uptake in Bacillus brevis . . 233 H. W. Hsueh and F. E. Stockdale Effects of serum on mammary epithelial proliferation in vitro during mammary gland development . . . . . . . . . . . 243 P. S. Ecklund and L. Levine Mouse sperm basic nuclear protein. Electrophoretic characterization and fate after fertilization . . . . . . . . 251 G. L. Nicolson and R. Yanagimachi and H. Yanagimachi Ultrastructural localization of lectin-binding sites on the zonae pellucidae and plasma membranes of mammalian eggs . . . . . . . . . . . . . 263 L. Meier and E. D. Hay Stimulation of corneal differentiation by interaction between cell surface and extracellular matrix. I. Morphometric analysis of transfilter ``induction'' 275 A. Loyter and N. Zakai and R. G. Kulka ''Ultramicroinjection'' of macromolecules or small particles into animal cells. A new technique based on virus-induced cell fusion . . . . . . . 292 R. E. Kane Preparation and purification of polymerized actin from sea urchin egg extracts . . . . . . . . . . . . . . . . 305 P. B. Pickett and D. R. Pitelka and S. T. Hamamoto and D. S. Misfeldt Occluding junctions and cell behavior in primary cultures of normal and neoplastic mammary gland cells . . . . . 316 E. T. Hedley-Whyte Distribution of [1,2-3H]cholesterol in mouse brain after injection in the suckling period . . . . . . . . . . . . 333 P. N. Hoffman and R. J. Lasek The slow component of axonal transport. Identification of major structural polypeptides of the axon and their generality among mammalian neurons . . . 351 W. A. Anderson and M. E. Perotti An ultracytochemical study of the respiratory potency, integrity, and fate of the sea urchin sperm mitochondria during early embryogenesis . . . . . . . 367 T. Motokawa and P. Satir Laser-induced spreading arrest of Mytilus gill cilia . . . . . . . . . . . 377 B. Storrie Antagonism by dibutyryl adenosine cyclic 3',5'-monophosphate and testololactone of concanavalin A capping . . . . . . . 392 J. J. Paulin The chondriome of selected trypanosomatids. A three-dimensional study based on serial thick sections and high voltage electron microscopy . . . . 404 J. L. Simmons and P. H. Fishman and E. Freese and R. O. Brady Morphological alterations and ganglioside sialyltransferase activity induced by small fatty acids in HeLa cells . . . . . . . . . . . . . . . . . 414 A. P. Somlyo and R. E. Garfield and S. Chacko and A. V. Somlyo Golgi organelle response to the antibiotic X537A . . . . . . . . . . . . 425 G. J. King and M. E. Holtrop Actin-like filaments in bone cells of cultured mouse calvaria as demonstrated by binding to heavy meromyosin . . . . . 445 D. Gospodarowicz and J. S. Moran Mitogenic effect of fibroblast growth factor on early passage cultures of human and murine fibroblasts . . . . . . 451
M. D. Cave Absence of ribosomal DNA amplification in the meroistic (telotrophic) ovary of the large milkweed bug \bionameOncopeltus fasciatus (Dallas) (Hemiptera: Lygaeidae) . . . . . . . . . 461 F. Grinnell and M. Q. Tobleman and C. R. Hackenbrock The distribution and mobility of anionic sites on the surfaces of baby hamster kidney cells . . . . . . . . . . . . . . 470 U. W. Goodenough and H. S. StClair BALD-2: a mutation affecting the formation of doublet and triplet sets of microtubules in Chlamydomonas reinhardtii . . . . . . . . . . . . . . 480 J. Schrevel and C. Besse [A functional flagella with a 6 + 0 pattern] . . . . . . . . . . . . . . . . 492 L. G. Tilney and P. Detmers Actin in erythrocyte ghosts and its association with spectrin. Evidence for a nonfilamentous form of these two molecules in situ . . . . . . . . . . . 508 A. Krishan and K. Paika and E. Frei Cytofluorometric studies on the action of podophyllotoxin and epipodophyllotoxins (VM-26, VP-16-213) on the cell cycle traverse of human lymphoblasts . . . . . . . . . . . . . . 521 M. C. Williams and S. L. Wissig The permeability of muscle capillaries to horseradish peroxidase . . . . . . . 531 M. H. Weisenseel and R. Nuccitelli and L. F. Jaffe Large electrical currents traverse growing pollen tubes . . . . . . . . . . 556 S. Knutton and M. C. Sumner and C. A. Pasternak Role of microvilli in surface changes of synchronized P815Y mastocytoma cells . . 568 A. Royal and R. Simard RNA synthesis in the ultrastructural and biochemical components of the nucleolus of Chinese hamster ovary cells . . . . . 577 S. A. Ernst Transport ATPase cytochemistry: ultrastructural localization of potassium-dependent and potassium-independent phosphatase activities in rat kidney cortex . . . . 586 C. Patzelt and A. Singh and Y. L. Marchand and L. Orci and B. Jeanrenaud Colchicine-binding protein of the liver. Its characterization and relation to microtubules . . . . . . . . . . . . . . 609 S. Batzri and E. D. Korn Interaction of phospholipid vesicles with cells. Endocytosis and fusion as alternate mechanisms for the uptake of lipid-soluble and water-soluble molecules . . . . . . . . . . . . . . . 621 S. T. Rohrlich and R. W. Rubin Biochemical characterization of crystals from the dermal iridophores of a chameleon Anolis carolinensis . . . . . 635 I. M. Goldstein and S. T. Hoffstein and G. Weissmann Mechanisms of lysosomal enzyme release from human polymorphonuclear leukocytes. Effects of phorbol myristate acetate . . 647 P. L. Paine Nucleocytoplasmic movement of fluorescent tracers microinjected into living salivary gland cells . . . . . . 652 L. W. Tice and S. H. Wollman and R. C. Carter Changes in tight junctions of thyroid epithelium with changes in thyroid activity . . . . . . . . . . . . . . . . 657 K. Jimbow and S. I. Roth and T. B. Fitzpatrick and G. Szabo Mitotic activity in non-neoplastic melanocytes in vivo as determined by histochemical, autoradiographic, and electron microscope studies . . . . . . 663 M. Kogon and G. D. Pappas Atypical gap junctions in the ciliary epithelium of the albino rabbit eye . . 671 F. G. Moser and B. P. Dorman and F. H. Ruddle Mouse-human heterokaryon analysis with a 33258 Hoechst--Giemsa technique . . . . 676 W. W. Franke and H. Spring and U. Scheer and H. Zerban Growth of the nuclear envelope in the vegetative phase of the green alga Acetabularia. Evidence for assembly from membrane components synthesized in the cytoplasm . . . . . . . . . . . . . . . 681
B. Mechler and P. Vassalli Membrane-bound ribosomes of myeloma cells. I. Preparation of free and membrane-bound ribosomal fractions. Assessment of the methods and properties of the ribosomes . . . . . . . . . . . . 1 B. Mechler and P. Vassalli Membrane-bound ribosomes of myeloma cells. II. Kinetic studies on the entry of newly made ribosomal subunits into the free and the membrane-bound ribosomal particles . . . . . . . . . . 16 B. Mechler and P. Vassalli Membrane-bound ribosomes of myeloma cells. III. The role of the messenger RNA and the nascent polypeptide chain in the binding of ribosomes to membranes 25 L. Huang and R. E. Pagano Interaction of phospholipid vesicles with cultured mammalial cells. I. Characteristics of uptake . . . . . . . 38 R. E. Pagano and L. Huang Interaction of phospholipid vesicles with cultured mammalian cells. II. Studies of mechanism . . . . . . . . . . 49 H. J. Reimers and J. F. Mustard and M. A. Packham Transfer of adenine nucleotides between the releasable and nonreleasable compartments of rabbit blood platelets 61 R. Niederman and T. D. Pollard Human platelet myosin. II. In vitro assembly and structure of myosin filaments . . . . . . . . . . . . . . . 72 T. D. Pollard Electron microscopy of synthetic myosin filaments. Evidence for cross-bridge. Flexibility and copolymer formation . . 93 S. R. Heidemann and M. W. Kirschner Aster formation in eggs of \bionameXenopus laevis. Induction by isolated basal bodies . . . . . . . . . 105 K. Herrup and E. M. Shooter Properties of the beta-nerve growth factor receptor in development . . . . . 118 S. H. Howell and W. J. Blaschko and C. M. Drew Inhibitor effects during the cell cycle in Chlamydomonas reinhardtii. Determination of transition points in asynchronous cultures . . . . . . . . . 126 J. L. Morgan and N. W. Seeds Tubulin constancy during morphological differentiation of mouse neuroblastoma cells . . . . . . . . . . . . . . . . . 136 M. C. Willingham and I. Pastan Cyclic AMP and cell morphology in cultured fibroblasts. Effects on cell shape, microfilament and microtubule distribution, and orientation to substratum . . . . . . . . . . . . . . . 146 J. L. Duncan and R. Schlegel Effect of streptolysin O on erythrocyte membranes, liposomes, and lipid dispersions. A protein-cholesterol interaction . . . . . . . . . . . . . . 160 D. C. Wallace and C. L. Bunn and J. M. Eisenstadt Cytoplasmic transfer of chloramphenicol resistance in human tissue culture cells 174 M. McGill and B. R. Brinkley Human chromosomes and centrioles as nucleating sites for the in vitro assembly of microtubules from bovine brain tubulin . . . . . . . . . . . . . 189 E. Puvion and W. Bernhard Ribonucleoprotein components in liver cell nuclei as visualized by cryoultramicrotomy . . . . . . . . . . . 200 S. Teichberg and E. Holtzman and S. M. Crain and E. R. Peterson Circulation and turnover of synaptic vesicle membrane in cultured fetal mammalian spinal cord neurons . . . . . 215 D. T. Woodrum and S. A. Rich and T. D. Pollard Evidence for biased bidirectional polymerization of actin filaments using heavy meromyosin prepared by an improved method . . . . . . . . . . . . . . . . . 231 G. Feldmann and M. Maurice and C. Sapin and J. P. Benhamou Inhibition by colchicine of fibrinogen translocation in hepatocytes . . . . . . 237 K. W. Jeon and M. S. Jeon Cytoplasmic filaments and cellular wound healing in amoeba proteus . . . . . . . 243
S. Gordon Cell fusion and some subcellular properties of heterokaryons and hybrids 257 F. Leighton and L. Coloma and C. Koenig Structure, composition, physical properties, and turnover of proliferated peroxisomes. A study of the trophic effects of Su-13437 on rat liver . . . . 281 R. Montesano and D. S. Friend and A. Perrelet and L. Orci In vivo assembly of tight junctions in fetal rat liver . . . . . . . . . . . . 310 B. Meyrick and L. Reid In vitro incorporation of (3H)threonine and (3H)glucose by the mucous and serous cells of the human bronchial submucosal gland. A quantitative electron microscope study . . . . . . . . . . . . 320 J. Vial and K. R. Porter Scanning microscopy of dissociated tissue cells . . . . . . . . . . . . . . 345 N. H. Chua and K. Matlin and P. Bennoun A chlorophyll-protein complex lacking in photosystem I mutants of Chlamydomonas reinhardtii . . . . . . . . . . . . . . 361 D. L. Fouts and J. E. Manning and D. R. Wolstenholme Physicochemical properties of kinetoplast DNA from Crithidia acanthocephali. Crithidia luciliae, and Trypanosoma lewisi . . . . . . . . . . . 378 J. B. Bard and E. D. Hay The behavior of fibroblasts from the developing avian cornea. Morphology and movement in situ and in vitro . . . . . 400 H. Gershman and J. Drumm Mobility of normal and virus-transformed cells in cellular aggregates . . . . . . 419 S. M. Shea and A. B. Morrison A stereological study of the glomerular filter in the rat. Morphometry of the slit diaphragm and basement membrane . . 436 H. G. Heidrich and W. L. Olsen Deoxyribonucleic acid-envelope complexes from \bionameEscherichia coli. A complex-specific protein and its possible function for the stability of the complex . . . . . . . . . . . . . . 444 J. C. Paulson and W. O. McClure Microtubules and axoplasmic transport. Inhibition of transport by podophyllotoxin: an interaction with microtubule protein . . . . . . . . . . 461 W. H. Fletcher and N. C. Anderson and J. W. Everett Intercellular communication in the rat anterior pituitary gland: an in vivo and in vitro study . . . . . . . . . . . . . 469 S. K. Sanders and E. L. Alexander and R. C. Braylan A high-yield technique for preparing cells fixed in suspension for scanning electron microscopy . . . . . . . . . . 476 J. A. Sandler and J. I. Gallin and M. Vaughan Effects of serotonin, carbamylcholine, and ascorbic acid on leukocyte cyclic GMP and chemotaxis . . . . . . . . . . . 480 D. K. Myers and L. E. Feinendegen Double labeling with [3H]thymidine and [125I]iododeoxyuridine as a method for determining the fate of injected DNA and cells in vivo . . . . . . . . . . . . . 484 L. A. Jaffe and M. H. Weisenseel and L. F. Jaffe Calcium accumulations within the growing tips of pollen tubes . . . . . . . . . . 488 J. B. Baseman and N. S. Hayes Differential effect of hormones on macromolecular synthesis and mitosis in chick embryo cells . . . . . . . . . . . 492
H. Sato and G. W. Ellis and S. Inoué Microtubular origin of mitotic spindle form birefringence. Demonstration of the applicability of Wiener's equation . . . 501 I. L. Cameron and N. C. Bols Effect of cell population density on G2 arrest in \bionameTetrahymena . . . . . 518 J. C. Chi and N. Rubinstein and K. Strahs and H. Holtzer Synthesis of myosin heavy and light chains in muscle cultures . . . . . . . 523 A. Benedetto and C. Delfini and G. Carloni and W. Djaczenko Study on the reinitiation of transcription in 37 RC cells after actinomycin D inhibition. Spectrum of major RNA species resynthesized after maximal suppression by the drug . . . . 538 M. Dubois-Dalcq and T. S. Reese Structural changes in the membrane of vero cells infected with a paramyxovirus 551 R. T. Briggs and D. B. Drath and M. L. Karnovsky and M. J. Karnovsky Localization of NADH oxidase on the surface of human polymorphonuclear leukocytes by a new cytochemical method 566 N. C. Martin and U. W. Goodenough Gametic differentiation in Chlamydomonas reinhardtii. I. Production of gametes and their fine structure . . . . . . . . 587 K. Bergman and U. W. Goodenough and D. A. Goodenough and J. Jawitz and H. Martin Gametic differentiation in Chlamydomonas reinhardtii. II. Flagellar membranes and the agglutination reaction . . . . . . . 606 U. W. Goodenough and R. L. Weiss Gametic differentiation in Chlamydomonas reinhardtii. III. Cell wall lysis and microfilament-associated mating structure activation in wild-type and mutant strains . . . . . . . . . . . . . 623 H. G. Rennke and R. S. Cotran and M. A. Venkatachalam Role of molecular charge in glomerular permeability. Tracer studies with cationized ferritins . . . . . . . . . . 638 J. K. Koehler Studies on the distribution of antigenic sites on the surface of rabbit spermatozoa . . . . . . . . . . . . . . 647 T. N. Wight and R. Ross Proteoglycans in primate arteries. I. Ultrastructural localization and distribution in the intima . . . . . . . 660 T. N. Wight and R. Ross Proteoglycans in primate arteries. II. Synthesis and secretion of glycosaminoglycans by arterial smooth muscle cells in culture . . . . . . . . 675 F. Autuori and H. Svensson and G. Dallner Biogenesis of microsomal membrane glycoproteins in rat liver. I. Presence of glycoproteins in microsomes and cytosol . . . . . . . . . . . . . . . . 687 F. Autuori and H. Svensson and G. Dallner Biogenesis of microsomal membrane glycoproteins in rat liver. II. Purification of soluble glycoproteins and their incorporation into microsomal membranes . . . . . . . . . . . . . . . 700 A. Elhammer and H. Svensson and F. Autuori and G. Dallner Biogenesis of microsomal membrane glycoproteins in rat liver. III. Release of glycoproteins from the Golgi fraction and their transfer to microsomal membranes . . . . . . . . . . . . . . . 715 M. S. Mooseker and L. G. Tilney Organization of an actin filament-membrane complex. Filament polarity and membrane attachment in the microvilli of intestinal epithelial cells . . . . . . . . . . . . . . . . . 725 J. A. Snyder and J. R. McIntosh Initiation and growth of microtubules from mitotic centers in lysed mammalian cells . . . . . . . . . . . . . . . . . 744 R. Hand DNA replication in mammalian cells. Altered patterns of initiation during inhibition of protein synthesis . . . . 761 E. J. Brandt and R. W. Elliott and R. T. Swank Defective lysosomal enzyme secretion in kidneys of Chediak--Higashi (beige) mice 774 J. W. Fuseler Temperature dependence of anaphase chromosome velocity and microtubule depolymerization . . . . . . . . . . . . 789 W. J. Larsen Opaque deposits on gap junction membranes after glutaraldehyde-calcium fixation . . . . . . . . . . . . . . . . 801 A. F. Boyne and T. P. Bohan and T. H. Williams Changes in cholinergic synaptic vesicle populations and the ultrastructure of the nerve terminal membranes of Narcine brasiliensis electron organ stimulated to fatigue in vivo . . . . . . . . . . . 814 H. Den and D. A. Malinzak and H. J. Keating and A. Rosenberg Influence of Concanavalin A, wheat germ agglutinin, and soybean agglutinin on the fusion of myoblasts in vitro . . . . 826 G. Blobel and B. Dobberstein Transfer of proteins across membranes. I. Presence of proteolytically processed and unprocessed nascent immunoglobulin light chains on membrane-bound ribosomes of murine myeloma . . . . . . . . . . . 835 G. Blobel and B. Dobberstein Transfer of proteins across membranes. II. Reconstitution of functional rough microsomes from heterologous components 852 M. Simionescu and N. Simionescu and G. E. Palade Segmental differentiations of cell junctions in the vascular endothelium. The microvasculature . . . . . . . . . . 863 H. Glaumann and H. Jansson and B. Arborgh and J. L. Ericsson Isolation of liver lysosomes by iron loading. Ultrastructural characterization . . . . . . . . . . . . 887 A. Amsterdam and Y. Koch and M. E. Lieberman and H. R. Lindner Distribution of binding sites for human chorionic gonadotropin in the preovulatory follicle of the rat . . . . 894 F. Jauker A feedback control of cell cycle parameters in \bionameTetrahymena . . . 901 T. R. Collins and J. C. Bartholomew and M. Calvin A simple method for freeze-fracture of monolayer cultures . . . . . . . . . . . 904 L. M. Popescu and I. Diculescu Calcium in smooth muscle sarcoplasmic reticulum in situ. Conventional and X-ray analytical electron microscopy . . 911
Z. Darzynkiewicz and F. Traganos and T. Sharpless and M. R. Melamed DNA denaturation in situ. Effect of divalent cations and alcohols . . . . . 1 E. I. Philipp and W. W. Franke and T. W. Keenan and J. Stadler and E. D. Jarasch Characterization of nuclear membranes and endoplasmic reticulum isolated from plant tissue . . . . . . . . . . . . . . 11 K. R. Miller and L. A. Staehelin Analysis of the thylakoid outer surface. Coupling factor is limited to unstacked membrane regions . . . . . . . . . . . . 30 W. J. Snell Mating in Chlamydomonas: a system for the study of specific cell adhesion. I. Ultrastructural and electrophoretic analyses of flagellar surface components involved in adhesion . . . . . . . . . . 48 W. J. Snell Mating in Chlamydomonas: a system for the study of specific cell adhesion. II. A radioactive flagella-binding assay for quantitation of adhesion . . . . . . . . 70 E. J. McGuire and C. L. Burdick Intercellular adhesive selectivity. I. An improved assay for the measurement of embryonic chick intercellular adhesion (liver and other tissues) . . . . . . . 80 E. J. McGuire Intercellular adhesive selectivity. II. Properties of embryonic chick liver cell--cell adhesion . . . . . . . . . . 90 J. G. Collard and J. H. Temmink Surface morphology and agglutinability with concanavalin A in normal and transformed murine fibroblasts . . . . . 101 P. B. Moens Spindle and kinetochore morphology of \bionameDictyostelium discoideum . . . . 113 J. D. Etlinger and R. Zak and D. A. Fischman Compositional studies of myofibrils from rabbit striated muscle . . . . . . . . . 123 A. Haksar and D. V. Maudsley and F. G. Péron and E. Bedigian Lanthanum: inhibition of ACTH-stimulated cyclic AMP and corticosterone synthesis in isolated rat adrenocortical cells . . 142 N. K. Das and C. Barker Mitotic chromosome condensation in the sperm nucleus during post fertilization maturation division in urechis eggs . . 155 J. S. Ingwall and K. Wildenthal Roles of creatine in the regulation of cardiac protein synthesis . . . . . . . 159 J. M. Lauweryns and J. Baert and W. De-Loecker Fine filaments in lymphatic endothelial cells . . . . . . . . . . . . . . . . . 163
P. M. Elias and D. S. Friend Vitamin-A-induced mucous metaplasia. An in vitro system for modulating tight and gap junction differentiation . . . . . . 173 T. Morimoto and S. Matsuura and S. Sasaki and Y. Yashiro and T. Omura Immunochemical and immunoelectron microscope studies on localization of NADPH-cytochrome c reductase on rat liver microsomes . . . . . . . . . . . . 189 E. Lazarides Actin, alpha-actinin, and tropomyosin interaction in the structural organization of actin filaments in nonmuscle cells . . . . . . . . . . . . 202 D. A. Goodenough In vitro formation of gap junction vesicles . . . . . . . . . . . . . . . . 220 O. Garatun-Tjeldsto and I. F. Pryme and J. K. Weltman and R. M. Dowben Synthesis and secretion of light-chain immunoglobulin in two successive cycles of synchronized plasmacytoma cells . . . 232 R. P. Rees and M. B. Bunge and R. P. Bunge Morphological changes in the neuritic growth cone and target neuron during synaptic junction development in culture 240 Y. M. Kersey and N. K. Wessells Localization of actin filaments in internodal cells of characean algae. A scanning and transmission electron microscope study . . . . . . . . . . . . 264 H. Gershman and J. Drumm and L. Culp Sorting out of normal and virus-transformed cells in cellular aggregates . . . . . . . . . . . . . . . 276 J. Kyte Immunoferritin determination of the distribution of (Na$^+$ + K$^+$) ATPase over the plasma membranes of renal convoluted tubules. I. Distal segment 287 J. Kyte Immunoferritin determination of the distribution of (Na$^+$ + K$^+$) ATPase over the plasma membranes of renal convoluted tubules. II. Proximal segment 304 P. J. Oates and O. Touster In vitro fusion of Acanthamoeba phagolysosomes. I. Demonstration and quantitation of vacuole fusion in Acanthamoeba homogenates . . . . . . . . 319 G. Pilar and L. Landmesser Ultrastructural differences during embryonic cell death in normal and peripherally deprived ciliary ganglia 339 L. Landmesser and G. Pilar Fate of ganglionic synapses and ganglion cell axons during normal and induced cell death . . . . . . . . . . . . . . . 357 L. F. Lemanski and M. S. Mooseker and L. D. Peachey and M. R. Iyengar Studies of muscle proteins in embryonic myocardial cells of cardiac lethal mutant mexican axolotls (\bionameAmbystoma mexicanum) by use of heavy meromyosin binding and sodium dodecyl sulfate polyacrylamide gel electrophoresis . . . . . . . . . . . . 375 D. L. Price and A. Stocks and J. W. Griffin and A. Young and K. Peck Glycine-specific synapses in rat spinal cord. Identification by electron microscope autoradiography . . . . . . . 389 G. L. Nicolson and J. R. Smith and G. Poste Effects of local anesthetics on cell morphology and membrane-associated cytoskeletal organization in BALB/3T3 cells . . . . . . . . . . . . . . . . . 395
R. B. Hanna and A. Hirano and G. D. Pappas Membrane specializations of dentritic spines and glia in the weaver mouse cerebellum: a freeze-fracture study . . 403 A. S. Narayanan and L. B. Sandberg and R. Ross and D. L. Layman The smooth muscle cell. III. Elastin synthesis in arterial smooth muscle cell culture . . . . . . . . . . . . . . . . 411 P. M. Andrews Microplicae: characteristic ridge-like folds of the plasmalemma . . . . . . . . 420 R. A. Felden and M. M. Sanders and N. R. Morris Presence of histones in Aspergillus nidulans . . . . . . . . . . . . . . . . 430 J. Nath and J. I. Rebhun Effects of caffeine and other methylxanthines on the development and metabolism of sea urchin eggs. Involvement of NADP and glutathione . . 440 B. M. Sweeney Freeze-fracture studies of the thecal membranes of Gonyaulax polyedra: circadian changes in the particles of one membrane face . . . . . . . . . . . 451 N. Frontali and B. Ceccarelli and A. Gorio and A. Mauro and P. Siekevitz and M. C. Tzeng and W. P. Hurlbut Purification from black widow spider venom of a protein factor causing the depletion of synaptic vesicles at neuromuscular junctions . . . . . . . . 462 R. M. Gould and R. M. Dawson Incorporation of newly formed lecithin into peripheral nerve myelin . . . . . . 480 D. L. Toylor Quantitative studies on the polarization optical properties of striated muscle. I. Birefringence changes of rabbit psoas muscle in the transition from rigor to relaxed state . . . . . . . . . . . . . 497 P. Pohjanpelto Putrescine transport is greatly increased in human fibroblasts initiated to proliferate . . . . . . . . . . . . . 512 R. R. Bruns Supramolecular structure of polymorphic collagen fibrils . . . . . . . . . . . . 521 P. Cooke A filamentous cytoskeleton in vertebrate smooth muscle fibers . . . . . . . . . . 539 D. D. Olgiati and B. G. Pogo and S. Dales Evidence for RNA linked to nascent DNA in HeLa cells . . . . . . . . . . . . . 557 H. F. Edelhauser and D. L. Van Horn and P. Miller and H. J. Pederson Effect of thiol-oxidation of glutathione with diamide on corneal endothelial function, junctional complexes, and microfilaments . . . . . . . . . . . . . 567 T. D. Pollard The role of actin in the temperature-dependent gelation and contraction of extracts of Acanthamoeba 579 T. P. Stossel and J. H. Hartwig Interactions of actin, myosin, and a new actin-binding protein of rabbit pulmonary macrophages. II. Role in cytoplasmic movement and phagocytosis 602 D. Ziegler and Y. Masui Control of chromosome behavior in amphibian oocytes. II. The effect of inhibitors of RNA and protein synthesis on the induction of chromosome condensation in transplanted brain nuclei by oocyte cytoplasm . . . . . . . 620 S. S. Brown and J. P. Revel Reversibility of cell surface label rearrangement . . . . . . . . . . . . . 629 C. G. Gahmberg and P. Häyry and L. C. Andersson Characterization of surface glycoproteins of mouse lymphoid cells 642 L. E. Malick and R. Langenbach Scanning electron microscopy of in vitro chemically transformed mouse embryo cells . . . . . . . . . . . . . . . . . 654 R. M. Steinman and S. E. Brodie and Z. A. Cohn Membrane flow during pinocytosis. A stereologic analysis . . . . . . . . . . 665 B. E. Hull and L. A. Staehelin Functional significance of the variations in the geometrical organization of tight junction networks 688 M. Simionescu and N. Simionescu and G. E. Palade Segmental differentiations of cell junctions in the vascular endothelium. Arteries and veins . . . . . . . . . . . 705 G. C. Ruben and J. N. Telford and R. C. Carroll Identification and transmembranous localization of active cytochrome oxidase in reconstituted membranes of purified phospholipids by electron microscopy . . . . . . . . . . . . . . . 724 R. W. Rubin and M. C. Hill and P. Hepworth and J. Boehmer Isolation and electrophoretic analysis of nucleoli, phenol-soluble nuclear proteins, and outer cyst walls from Acanthamoeba castellanii during encystation initiation . . . . . . . . . 740 M. H. Ellisman and J. E. Rash and L. A. Staehelin and K. R. Porter Studies of excitable membranes. II. A comparison of specializations at neuromuscular junctions and nonjunctional sarcolemmas of mammalian fast and slow twitch muscle fibers . . . 752 B. Tandler and J. H. Poulsen Fusion of the envelope of mucous droplets with the luminal plasma membrane in acinar cells of the cat submandibular gland . . . . . . . . . . 775 S. Hoffstein and R. Soberman and I. Goldstein and G. Weissmann Concanavalin A induces microtubule assembly and specific granule discharge in human polymorphonuclear leukocytes 781 A. L. Olins and M. B. Senior and D. E. Olins Ultrastructural features of chromatin nu bodies . . . . . . . . . . . . . . . . . 787 R. Montesano and G. Gabbiani and A. Perrelet and L. Orci In vivo induction of tight junction proliferation in rat liver . . . . . . . 793 L. M. Patt and R. O. Endres and D. O. Lucas and W. J. Grimes Ectogalactosyltransferase studies in fibroblasts and concanavalin A-stimulated lymphocytes . . . . . . . . 799
U. Scheer and J. Kartenbeck and M. F. Trendelenburg and J. Stadler and W. W. Franke Experimental disintegration of the nuclear envelope. Evidence for pore-connecting fibrils . . . . . . . . 1 G. M. Villegas and J. Villegas Structural complexes in the squid giant axon membrane sensitive to ionic concentrations and cardiac glycosides 19 S. Basinger and D. Bok and M. Hall Rhodopsin in the rod outer segment plasma membrane . . . . . . . . . . . . 29 N. Tanphaichitr and K. C. Moore and D. K. Granner and R. Chalkley Relationship between chromosome condensation and metaphase lysine-rich histone phosphorylation . . . . . . . . 43 L. G. Tilney The polymerization of actin: II. how nonfilamentous actin becomes nonrandomly distributed in sperm: evidence for the association of this actin with membranes 51 L. G. Tilney The polymerization of actin. III. Aggregates of nonfilamentous actin and its associated proteins: a storage form of actin . . . . . . . . . . . . . . . . 73 F. Humbert and A. Grandchamp and C. Pricam and A. Perrelet and L. Orci Morphological changes in tight junctions of Necturus maculosus proximal tubules undergoing saline diuresis . . . . . . . 90 A. K. Bal and D. P. Verma and H. Byrne and G. A. Maclachlan Subcellular localization of cellulases in auxin-treated pea . . . . . . . . . . 97 D. L. Brown and A. Massalski and R. Patenaude Organization of the flagellar apparatus and associate cytoplasmic microtubules in the quadriflagellate alga Polytomella agilis . . . . . . . . . . . . . . . . . 106 J. Beisson and M. Lefort-Tran and M. Pouphile and M. Rossignol and B. Satir Genetic analysis of membrane differentiation in Paramecium. Freeze-fracture study of the trichocyst cycle in wild-type and mutant strains 126 H. C. Fertuck and M. M. Salpeter Quantitation of junctional and extrajunctional acetylcholine receptors by electron microscope autoradiography after (125)I-$ \alpha $-bungarotoxin binding at mouse neuromuscular junctions 144 R. F. Levine and M. E. Fedorko Isolation of intact megakaryocytes from guinea pig femoral marrow. Successful harvest made possible with inhibitions of platelet aggregation; enrichment achieved with a two-step separation technique . . . . . . . . . . . . . . . 159 W. W. Franke and M. R. Lüder and J. Kartenbeck and H. Zerban and T. W. Keenan Involvement of vesicle coat material in casein secretion and surface regeneration . . . . . . . . . . . . . . 173 R. B. Rutherford and R. Ross Platelet factors stimulate fibroblasts and smooth muscle cells quiescent in plasma serum to proliferate . . . . . . 196 J. M. Oliver and J. A. Krawiec and R. D. Berlin Carbamycholine prevents giant granule-formation in cultured fibroblasts from beige (Chediak--Higashi) mice . . . . . . . . 205 B. A. Silverberg and P. M. Stokes and L. B. Ferstenberg Intranuclear complexes in a copper-tolerant green alga . . . . . . . 210 S. W. Dashe and S. H. Howell Cautionary note on the use of [methyl-3H]thymidine to measure rates of chloroplast DNA synthesis in Chlamydomonas reinhardtii . . . . . . . 215 A. C. Durham and E. B. Ridgway Control of chemotaxis in Physarum polycephalum . . . . . . . . . . . . . . 218 E. B. Ridgway and A. C. Durham Oscillations of calcium ion concentrations in Physarum polycephalum 223
I. Tamm and R. Hand and L. A. Caliguiri Action of dichlorobenzimidazole riboside on RNA synthesis in L-929 and HeLa cells 229 C. A. Alexander and R. L. Hamilton and R. J. Havel Subcellular localization of B apoprotein of plasma lipoproteins in rat liver . . 241 G. Bergtrom and H. Laufer and R. Rogers Fat body: a site of hemoglobin synthesis in Chironomus thummi (diptera) . . . . . 264 G. Albrecht-Buehler Filopodia of spreading 3T3 cells. Do they have a substrate-exploring function? . . . . . . . . . . . . . . . 275 P. E. León Molecular hybridization of iodinated 4S, 5S, and 18S + 28S RNA to salamander chromosomes . . . . . . . . . . . . . . 287 T. Bibring and J. Baxandall and S. Denslow and B. Walker Heterogeneity of the alpha subunit of tubulin and the variability of tubulin within a single organism . . . . . . . . 301 K. Hausmann and R. D. Allen Membrane behavior of exocytic vesicles: II in fate of the trichocyst membranes in paramecium after induced trichocyst discharge . . . . . . . . . . . . . . . 313 L. Y. Bourguignon and G. E. Palade Incorporation of polypeptides into thylakoid membranes of Chlamydomonas reinhardtii. Cyclic variations . . . . . 327 R. A. Wallace and D. W. Jared Protein incorporation by isolated amphibian oocytes. V. Specificity for vitellogenin incorporation . . . . . . . 345 C. Siu and H. Swift and K. Chiang Characterization of cytoplasmic and nuclear genomes in the colorless alga Polytoma. I. Ultrastructural analysis of organelles . . . . . . . . . . . . . . . 352 C. Siu and H. Swift and K. Chiang Characterization of cytoplasmic and nuclear genomes in the colorless alga Polytoma. II. General characterization of organelle nucleic acids . . . . . . . 371 C. Siu and K. Chiang and H. Swift Characterization of cytoplasmic and nuclear genomes in the colorless alga Polytoma. III. Ribosomal RNA cistrons of the nucleus and leucoplast . . . . . . . 383 D. Kessler and V. T. Nachmias and A. G. Loewy Actomyosin content of Physarum plasmodia and detection of immunological cross-reactions with myosins from related species . . . . . . . . . . . . 393 T. G. Helantjaris and P. S. Lombardi and L. A. Glasgow Effect of cytochalasin B on the adhesion of mouse peritoneal macrophages . . . . 407 G. W. Cooper and J. M. Bedford Asymmetry of spermiation and sperm surface charge patterns over the giant acrosome in the musk shrew Suncus murinus . . . . . . . . . . . . . . . . 415 G. Fisher and E. S. Kaneshiro and P. D. Peters Divalent cation affinity sites in Paramecium aurelia . . . . . . . . . . . 429 E. D. Salmon and D. Goode and T. K. Maugel and D. B. Bonar Pressure-induced depolymerization of spindle microtubules. III. Differential stability in HeLa cells . . . . . . . . 443 D. Baetens and C. Rufener and B. C. Srikant and R. Dobbs and R. Unger and L. Orci Identification of glucagon-producing cells (A cells) in dog gastric mucosa 455 U. Scheer and M. F. Trendelenburg and W. W. Franke Regulation of transcription of genes of ribosomal rna during amphibian oogenesis. A biochemical and morphological study . . . . . . . . . . 465 J. G. Swift and T. M. Mukherjee Demonstration of the fuzzy surface coat of rat intestinal microvilli by freeze-etching . . . . . . . . . . . . . 491 J. C. Herr Reflexive gap junctions. Gap junctions between processing arising from the same ovarian decidual cell . . . . . . . . . 495 Z. Vogel and M. P. Daniels Ultrastructure of acetylcholine receptor clusters on cultured muscle fibers . . . 501 A. Martínez-Palomo and W. DeSouza and A. Gonzalez-Robles Topographical differences in the distribution of surface coat components and intramembrane particles. A cytochemical and freeze-fracture study in culture forms of Trypanosoma cruzi 507 A. Parducz and F. Joó Visualization of stimulated nerve endings by preferential calcium accumulation of mitochondria . . . . . . 513
A. W. Clark Changes in the structure of neuromuscular junctions caused by variations in osmotic pressure . . . . . 521 F. J. Longo Sperm aster in rabbit zygotes: its structure and function . . . . . . . . . 539 W. T. Melvin and A. Kumar and R. A. Malt Conservation of ribosomal RNA during compensatory renal hypertrophy. A major mechanism in RNA accretion . . . . . . . 548 A. H. Reddi and W. A. Anderson Collagenous bone matrix-induced endochondral ossification hemopoiesis 557 T. G. Rosano and D. H. Jones Developmental changes in mitochondria during the transition into lactation in the mouse mammary gland . . . . . . . . 573 T. G. Rosano and S. K. Lee and D. H. Jones Developmental changes in mitochondria during the transition into lactation in the mouse mammary gland. II. Membrane marker enzymes and membrane ultrastructure . . . . . . . . . . . . . 581 H. Denk and P. W. Moldeus and R. A. Schulz and J. B. Schenkman and S. R. Keyes and D. L. Cinti Hepatic organelle interaction. IV. Mechanism of succinate enhancement of formaldehyde accumulation from endoplasmic reticulum N-dealkylations 589 T. A. Pfeffer and C. F. Asnes and L. Wilson Properties of tubulin in unfertilized sea urchin eggs. Quantitation and characterization by the colchicine-binding reaction . . . . . . 599 T. Kadota and K. Kadota and E. G. Gray Coated-vesicle shells, particle/chain material, and tubulin in brain synaptosomes. An electron microscope and biochemical study . . . . . . . . . . . 608 R. V. Dippell Effects of nuclease and protease digestion on the ultrastructure of Paramecium basal bodies . . . . . . . . 622 E. M. Bartos and A. D. Glinos Properties of growth-related acetylcholinesterase in a cell line of fibroblastic origin . . . . . . . . . . 638 L. N. Chan and J. M. Oliver Changes in number, mobility, and topographical distribution of lectin receptors during maturation of chick erythroid cells . . . . . . . . . . . . 647 R. W. Merriam and R. J. Hill The germinal vesicle nucleus of \bionameXenopus laevis oocytes as a selective storage receptacle for proteins . . . . . . . . . . . . . . . . 659 R. S. Decker Hormonal regulation of gap junction differentiation . . . . . . . . . . . . 669 R. Vujici\'c and L. J. Radojevi\'c and M. Neskovi\'c Orderly arrangement of ribosomes in the embryogenic callus tissue of Corylus avellana L . . . . . . . . . . . . . . . 686 C. Hofmann and G. B. Bouck Immunological and structural evidence for patterned intussusceptive surface growth in a unicellular organism. A postulated role for submembranous proteins and microtubules . . . . . . . 693 B. Byers and L. Goetsch A highly ordered ring of membrane-associated filaments in budding yeast . . . . . . . . . . . . . . . . . 717 H. R. Fernandez and E. E. Nickel Ultrastructural and molecular characteristics of crayfish photoreceptor membranes . . . . . . . . 721 D. Billen and A. C. Olson DNA replication in Chinese hamster ovary cells made permeable to nucleotides by tween-80 treatment . . . . . . . . . . . 732 A. Kitamura and K. Hiwatashi Mating-reactive membrane vesicles from cilia of Paramecium caudatum . . . . . . 736
W. J. Reville and D. E. Goll and M. H. Stromer and R. M. Robson and W. R. Dayton A Ca$^{2+}$-activated protease possibly involved in myofibrillar protein turnover. Subcellular localization of the protease in porcine skeletal muscle 1 S. G. Phillips and J. B. Rattner Dependence of centriole formation on protein synthesis . . . . . . . . . . . 9 H. L. Leffert and D. B. Weinstein Growth control of differentiated fetal rat hepatocytes in primary monolayer culture. IX. Specific inhibition of DNA synthesis initiation by very low density lipoprotein and possible significance to the problem of liver regeneration . . . 20 G. G. Pietra and L. G. Spagnoli and D. M. Capuzzi and C. E. Sparks and A. P. Fishman and J. B. Marsh Metabolism of 125I-labeled lipoproteins by the isolated rat lung . . . . . . . . 33 J. Cardelli and B. Long and H. C. Pitot Direct association of messenger RNA labeled in the presence of fluoroorotate with membranes of the endoplasmic reticulum in rat liver . . . . . . . . . 47 P. De Camilli and D. Peluchetti and J. Meldolesi Dynamic changes of the luminal plasmalemma in stimulated parotid acinar cells. A freeze-fracture study . . . . . 59 G. Sluder Experimental manipulation of the amount of tubulin available for assembly into the spindle of dividing sea urchin eggs 75 H. Ripps and M. Shakib and E. D. MacDonald Peroxidase uptake by photoreceptor terminals of the skate retina . . . . . 86 E. R. Jakoi and G. Zampighi and J. D. Robertson Regular structures in unit membranes. II. Morphological and biochemical characterization of two water-soluble membrane proteins isolated from the suckling rat ileum . . . . . . . . . . . 97 J. D. Robertson and S. Knutton and A. R. Limbrick and E. R. Jakoi and G. Zampighi Regular structures in unit membranes. III. Further observations on the particulate component of the suckling rat ileum endocytic membrane complex . . 112 D. L. Taylor and J. A. Rhodes and S. A. Hammond The contractile basis of ameboid movement. II. Structure and contractility of motile extracts and plasmalemma-ectoplasm ghosts . . . . . . 123 K. J. Karnaky and S. A. Ernst and C. W. Philpott Teleost chloride cell. I. Response of pupfish Cyprinodon variegatus gill Na,K--ATPase and chloride cell fine structure to various high salinity environments . . . . . . . . . . . . . . 144 K. J. Karnaky and L. B. Kinter and W. B. Kinter and C. E. Stirling Teleost chloride cell. II. Autoradiographic localization of gill Na,K--ATPase in killifish Fundulus heteroclitus adapted to low and high salinity environments . . . . . . . . . 157 S. Schacher and E. Holtzman and D. C. Hood Synaptic activity of frog retinal photoreceptors. A peroxidase uptake study . . . . . . . . . . . . . . . . . 178 M. P. Sheetz and R. G. Painter and S. J. Singer Biological membranes as bilayer couples. III. Compensatory shape changes induced in membranes . . . . . . . . . . . . . . 193 J. van Veen and R. M. Roberts and K. D. Noonan An analysis of lectin-initiated cell agglutination in a series of CHO subclones which respond morphologically to growth in dibutyryl cyclic AMP . . . 204 J. P. Whitlock and H. V. Gelboin and H. G. Coon Variation in aryl hydrocarbon (benzo(a)pyrene) hydroxylase activity in heteroploid and predominantly diploid rat liver cells in culture . . . . . . . 217 M. G. Mellon and L. I. Rebhun Sulfhydryls and the in vitro polymerization of tubulin . . . . . . . 226 K. O. Söderström and M. Parvinen Incorporation of (3H)uridine by the chromatoid body during rat spermatogenesis . . . . . . . . . . . . 239 M. P. Sheetz and S. J. Singer Equilibrium and kinetic effects of drugs on the shapes of human erythrocytes . . 247 T. C. Rodman and R. Bachvarova RNA synthesis in preovulatory mouse oocytes . . . . . . . . . . . . . . . . 251
C. R. Kahn Membrane receptors for hormones and neurotransmitters . . . . . . . . . . . 261 L. Ofer and H. Levkovitz and A. Loyter Conjugation in \bionameTetrahymena pyriformis. The effect of polylysine, concanavalin A, and bivalent metals on the conjugation process . . . . . . . . 287 D. T. Theodosis and J. Dreifuss and M. C. Harris and L. Orci Secretion-related uptake of horseradish peroxidase in neurohypophysial axons . . 294 J. E. Goldman and K. S. Kim and J. H. Schwartz Axonal transport of [3H]serotonin in an identified neuron of \bionameAplysia californica . . . . . . . . . . . . . . 304 A. O. Banjo and A. M. Nemeth Proliferation of endoplasmic reticulum with its enzyme, UDP-glucuronyltransferase, in chick embryo liver during culture. Effects of phenobarbital . . . . . . . . . . . . . 319 J. K. Hoober and W. J. Stegeman Kinetics and regulation of synthesis of the major polypeptides of thylakoid membranes in Chlamydomonas reinhardtii y-1 at elevated temperatures . . . . . . 326 M. Henkart and D. M. Landis and T. S. Reese Similarity of junctions between plasma membranes and endoplasmic reticulum in muscle and neurons . . . . . . . . . . . 338 C. L. Bowman and H. Tedeschi and B. J. DiDomenico and F. D. Tung Osmotic behavior and permeability of osmotically lysed mitochondria . . . . . 348 A. P. Mahowald and K. Illmensee and F. R. Turner Interspecific transplantation of polar plasm between \bionameDrosophila embryos 358 H. Rubin and R. N. Trelease Subcellular localization of glyoxylate cycle enzymes in Ascaris suum larvae . . 374 M. Locke and P. Huie The beads in the Golgi complex-endoplasmic reticulum region . . 384 D. Gospodarowicz and J. Weseman and J. S. Moran and J. Lindstrom Effect of fibroblast growth factor on the division and fusion of bovine myoblasts . . . . . . . . . . . . . . . 395 J. E. Manning and D. R. Wolstenholme Replication of kinetoplast DNA of Crithidia acanthocephali. I. Density shift experiments using deuterium oxide 406 C. Peracchia and A. F. Dulhunty Low resistance junctions in crayfish. Structural changes with functional uncoupling . . . . . . . . . . . . . . . 419 D. E. Comings and D. C. Harris Nuclear proteins. II. Similarity of nonhistone proteins in nuclear sap and chromatin, and essential absence of contractile proteins from mouse liver nuclei . . . . . . . . . . . . . . . . . 440 K. A. Fisher and D. Branton Freeze-fracture autoradiography: feasibility . . . . . . . . . . . . . . 453 S. H. Blose and S. Chacko Rings of intermediate (100 A) filament bundles in the perinuclear region of vascular endothelial cells. Their mobilization by colcemid and mitosis . . 459 J. G. Szekely and T. P. Copps Radiation-induced delay of nuclear pore formation . . . . . . . . . . . . . . . 466
N. K. Gonatas and J. O. Gonatas and A. Stieber and J. C. Antoine and S. Avrameas Quantitative ultrastructural autoradiographic studies of iodinated plasma membranes of lymphocytes during segregation and internalization of surface immunoglobulins . . . . . . . . 477 F. J. Martin and R. C. MacDonald Lipid vesicle-cell interactions. I. Hemagglutination and hemolysis . . . . . 494 F. J. Martin and R. C. MacDonald Lipid vesicle-cell interactions. II. Induction of cell fusion . . . . . . . . 506 F. J. Martin and R. C. MacDonald Lipid vesicle-cell interactions. III. Introduction of a new antigenic determinant into erythrocyte membranes 515 M. Schliwa The role of divalent cations in the regulation of microtubule assembly. In vivo studies on microtubules of the heliozoan axopodium using the ionophore A23187 . . . . . . . . . . . . . . . . . 527 R. Rodewald and S. B. Newman and M. J. Karnovsky Contraction of isolated brush borders from the intestinal epithelium . . . . . 541 C. L. Schengrund and A. Rosenberg and M. A. Repman Ecto-ganglioside-sialidase activity of herpes simplex virus-transformed hamster embryo fibroblasts . . . . . . . . . . . 555 J. E. Edström and U. Lönn Cytoplasmic zone analysis. RNA flow studied by micromanipulation . . . . . . 562 U. Lönn and J. E. Edström Mobility restriction in vivo of the heavy ribosomal subunit in a secretory cell . . . . . . . . . . . . . . . . . . 573 N. Dwyer and G. Blobel A modified procedure for the isolation of a pore complex-lamina fraction from rat liver nuclei . . . . . . . . . . . . 581 I. B. Heath and M. C. Heath Ultrastructure of mitosis in the cowpea rust fungus Uromyces phaseoli var. Vignae . . . . . . . . . . . . . . . . . 592 N. Simionescu and M. Simionescu Galloylglucoses of low molecular weight as mordant in electron microscopy. I. Procedure, and evidence for mordanting effect . . . . . . . . . . . . . . . . . 608 N. Simionescu and M. Simionescu Galloylglucoses of low molecular weight as mordant in electron microscopy. II. The moiety and functional groups possibly involved in the mordanting effect . . . . . . . . . . . . . . . . . 622 E. G. Moore Cell to substratum adhesion-promoting activity released by normal and virus-transformed cells in culture . . . 634 S. Sasaki and Y. Tashiro Studies on the posterior silk gland of the silkworm Bombyx mori. V. Electron microscope localization of fibroin in the posterior silk gland at the later stage of the fifth instar . . . . . . . 648 H. Cheng and M. G. Farquhar Presence of adenylate cyclase activity in Golgi and other fractions from rat liver. I. Biochemical determination . . 660 H. Cheng and M. G. Farquhar Presence of adenylate cyclase activity in Golgi and other fractions from rat liver. II. Cytochemical localization within Golgi and ER membranes . . . . . 671 A. C. Chan and I. G. Walker Reduced DNA repair during differentiation of a myogenic cell line 685 V. Herzog and H. Sies and F. Miller Exocytosis in secretory cells of rat lacrimal gland. Peroxidase release from lobules and isolated cells upon cholinergic stimulation . . . . . . . . 692 F. Grinnell and M. Q. Tobleman and C. R. Hackenbrock Initial attachment of baby hamster kidney cells to an epoxy substratum. Ultrastructural analysis . . . . . . . . 707 G. G. Maul Fibrils attached to the nuclear pore prevent egress of SV40 particles from the infected nucleus . . . . . . . . . . 714 R. A. Clark and I. Olsson and S. J. Klebanoff Cytotoxicity for tumor cells of cationic proteins from human neutrophil granules 719
A. E. Blaurock and W. Stoeckenius and D. Oesterhelt and G. L. Scherfhof Structure of the cell envelope of Halobacterium halobium . . . . . . . . . 1 E. Weidner The microsporidian spore invasion tube. The ultrastructure, isolation, and characterization of the protein comprising the tube . . . . . . . . . . 23 E. M. Eddy and B. M. Shapiro Changes in the topography of the sea urchin egg after fertilization . . . . . 35 M. D. Cave Absence of rDNA amplification in the uninucleolate oocyte of the cockroach \bionameBlattella germanica (Oorthoptera: Blattidae) . . . . . . . . 49 D. A. Newsome and T. F. Linsenmayer and R. L. Trelstad Vitreous body collagen. Evidence for a dual origin from the neural retina and hyalocytes . . . . . . . . . . . . . . . 59 K. S. Bedi and D. J. Goldstein Apparent anomalies in nuclear feulgen--DNA contents. Role of systematic microdensitometric errors . . 68 C. A. Johmann and M. A. Gorovsky Immunofluorescence evidence for the absence of histone H1 in a mitotically dividing, genetically inactive nucleus 89 S. R. Grady and E. J. McGuire Intercellular adhesive selectivity. III. Species selectivity of embryonic liver intercellular adhesion . . . . . . . . . 96 Y. Sharoni and S. Eimerl and M. Schramm Secretion of old versus new exportable protein in rat parotid slics. Control by neurotransmitters . . . . . . . . . . . 107 C. H. Damsky Environmentally induced changes in mitochondria and endoplasmic reticulum of Saccharomyces carlsbergensis yeast 123 L. A. Staehelin Reversible particle movements associated with unstacking and restacking of chloroplast membranes in vitro . . . . . 136 G. Carpenter and S. Cohen 125I-labeled human epidermal growth factor. Binding, internalization, and degradation in human fibroblasts . . . . 159 J. Fried and A. G. Perez and B. D. Clarkson Flow cytofluorometric analysis of cell cycle distributions using propidium iodide. Properties of the method and mathematical analysis of the data . . . 172 D. Lagunoff and E. Y. Chi Effect of colchicine on rat mast cells 182 W. W. Franke and J. Kartenbeck and H. Spring Involvement of bristle coat structures in surface membrane formations and membrane interactions during coenocytotomic cleavage in caps of Acetabularia mediterranea . . . . . . . 196 J. B. Tucker and M. Meats Microtubules and control of insect egg shape . . . . . . . . . . . . . . . . . 207 E. Skutelsky and M. G. Farquhar Variations in distribution of con A receptor sites and anionic groups during red blood cell differentiation in the rat . . . . . . . . . . . . . . . . . . 218 E. Skutelsky and D. Danon Redistribution of surface anionic sites on the luminal front of blood vessel endothelium after interaction with polycationic ligand . . . . . . . . . . 232 J. Frankel and L. M. Jenkins and L. E. DeBault Causal relations among cell cycle processes in \bionameTetrahymena pyriformis. An analysis employing temperature-sensitive mutants . . . . . 242 M. Elfvin and R. J. Levine and M. M. Dewey Paramyosin in invertebrate muscles. I. Identification and localization . . . . 261 R. J. Levine and M. Elfvin and M. M. Dewey and B. Walcott Paramyosin in invertebrate muscles. II. Content in relation to structure and function . . . . . . . . . . . . . . . . 273 R. H. Cohn and J. J. Cassiman and M. R. Bernfield Relationship of transformation, cell density, and growth control to the cellular distribution of newly synthesized glycosaminoglycan . . . . . 280 J. H. Hartwig and T. P. Stossel Interactions of actin, myosin, and an actin-binding protein of rabbit pulmonary macrophages. III. Effects of cytochalasin B . . . . . . . . . . . . . 295 R. R. Weihing Cytochalasin B inhibits actin-related gelation of HeLa cell extracts . . . . . 303 M. Adesnik and M. Lande and T. Martin and D. D. Sabatini Retention of mRNA on the endoplasmic reticulum membranes after in vivo disassembly of polysomes by an inhibitor of initiation . . . . . . . . . . . . . 307 R. Molday and R. Jaffe and D. McMahon Concanavalin A and wheat germ agglutinin receptors on \bionameDictyostelium: Their visualization by scanning electron microscopy with microspheres . . . . . . 314 R. A. Bloodgood and J. L. Rosenbaum Initiation of brain tubulin assembly by a high molecular weight flagellar protein factor . . . . . . . . . . . . . 322 W. J. Larsen and P. M. Heidger and J. C. Herr ''Central fold'' or true junctional profile . . . . . . . . . . . . . . . . 333
S. Githens and R. Pictet and P. Phelps and W. J. Rutter $5$-bromodeoxyuridine may alter the differentiative program of the embryonic pancreas . . . . . . . . . . . . . . . . 341 H. H. van Vliet and F. Spies and W. A. Linnemans and A. Klepke and J. A. Op den Kamp and L. L. van Deenen Isolation and characterization of subcellular membranes of Entamoeba invadens . . . . . . . . . . . . . . . . 357 G. Albrecht-Buehler and R. M. Lancaster A quantitative description of the extension and retraction of surface protrusions in spreading 3T3 mouse fibroblasts . . . . . . . . . . . . . . 370 R. L. Hallberg and P. J. Bruns Ribosome biosynthesis in Tetrahymena pyriformis. Regulation in response to nutritional changes . . . . . . . . . . 383 T. G. Hollinger and A. W. Schuetz ''Cleavage'' and cortical granule breakdown in Rana pipiens oocytes induced by direct microinjection of calcium . . . . . . . . . . . . . . . . 395 L. G. Tilney and M. S. Mooseker Actin filament-membrane attachment: are membrane particles involved? . . . . . . 402 M. S. Mooseker Brush border motility. Microvillar contraction in triton-treated brush borders isolated from intestinal epithelium . . . . . . . . . . . . . . . 417 D. R. Wolstenholme and C. M. Fauron A partial map of the circular mitochondrial genome of \bionameDrosophila melanogaster. Location of EcoRI-sensitive sites and the adenine-thymine-rich region . . . . 434 D. Sandoz and E. Biosvieux-Ulrich [Ciliogenesis in the mucous cells of the quail oviduct. I. Ultrastructural study in the laying quail] . . . . . . . . . . 449 D. Sandoz and E. Biosvieux-Ulrich and C. Laugier and E. Brard [Ciliogenesis in the mucous cells of the quail oviduct. II. Hormonal control] . . 460 J. P. Quigley Association of a protease (plasminogen activator) with a specific membrane fraction isolated from transformed cells 472 P. Kelly and C. W. Cotman and C. Gentry and G. L. Nicolson Distribution and mobility of lectin receptors on synaptic membranes of identified neurons in the central nervous system . . . . . . . . . . . . . 487 N. H. Chua and G. Blobel and P. Siekevitz and G. E. Palade Periodic variations in the ratio of free to thylakoid-bound chloroplast ribosomes during the cell cycle of Chlamydomonas reinhardtii . . . . . . . . . . . . . . 497 C. E. Zeilig and R. A. Johnson and E. W. Sutherland and D. L. Friedman Adenosine 3': 5'-monophosphate content and actions in the division cycle of synchronized HeLa cells . . . . . . . . 515 S. Fowler and J. Remacle and A. Trouet and H. Beaufay and J. Berthet and M. Wibo and P. Hauser Analytical study of microsomes and isolated subcellular membranes from rat liver. V. Immunological localization of cytochrome b5 by electron microscopy: methodology and application to various subcellular fractions . . . . . . . . . 535 J. Remacle and S. Fowler and H. Beaufay and A. Amarcostesec and J. Berthet Analytical study of microsomes and isolated subcellular membranes from rat liver. VI. Electron microscope examination of microsomes for cytochrome b5 by means of a ferritin-labeled antibody . . . . . . . . . . . . . . . . 551 S. Sasaki and Y. Tashiro Studies on the posterior silk gland of the silkworm Bombyx mori. VI. Distribution of microtubules in the posterior silk gland cells . . . . . . . 565 J. Smith-Sonneborn and S. R. Rodermel Loss of endocytic capacity in aging Paramecium. The importance of cytoplasmic organelles . . . . . . . . . 575 W. S. Sale and P. Satir Splayed Tetrahymena cilia. A system for analyzing sliding and axonemal spoke arrangements . . . . . . . . . . . . . . 589 A. Lernmark and A. Nathans and D. F. Steiner Preparation and characterization of plasma membrane-enriched fractions from rat pancreatic islets . . . . . . . . . 606 K. R. Miller and G. J. Miller and K. R. McIntyre The light-harvesting chlorpohyll-protein complex of photosystem II. Its location in the photosynthetic membrane . . . . . 624 Y. J. Wang and H. R. Mahler Topography of the synaptosomal membrane 639 P. L. Moore and H. L. Bank and N. T. Brissie and S. S. Spicer Association of microfilament bundles with lysosomes in polymorphonuclear leukocytes . . . . . . . . . . . . . . . 659 R. Rodewald pH-dependent binding of immunoglobulins to intestinal cells of the neonatal rat 666 M. J. Ueda and T. Ito and T. S. Okada and S. I. Ohnishi A correlation between membrane fluidity and the critical temperature for cell adhesion . . . . . . . . . . . . . . . . 670 H. B. Peng and L. F. Jaffe A simple, selective method for freeze-fracturing spherical cells . . . 674 E. Anderson and D. F. Albertini Gap junctions between the oocyte and companion follicle cells in the mammalian ovary . . . . . . . . . . . . 680
R. P. Cox and M. R. Krauss and M. E. Balis and J. Dancis Studies on cell communication with enucleated human fibroblasts . . . . . . 693 R. E. Kane Actin polymerization and interaction with other proteins in temperature-induced gelation of sea urchin egg extracts . . . . . . . . . . 704 J. E. Barker and J. E. Pierce and A. W. Nienhuis Hemoglobin switching in sheep and goats. VI. Commitment of erythroid colony-forming cells to the synthesis of betaC globin . . . . . . . . . . . . . . 715 W. L. McKeehan and R. G. Ham Stimulation of clonal growth of normal fibroblasts with substrata coated with basic polymers . . . . . . . . . . . . . 727 A. M. DiPasquale and J. McGuire and G. Moellmann and S. J. Wasserman Microtubule assembly in cultivated Greene melanoma cells is stimulated by dibutyryl adenosine 3': 5'-cyclic monophosphate or cholera toxin . . . . . 735 J. Bryan A quantitative analysis of microtubule elongation . . . . . . . . . . . . . . . 749 D. E. Moody and J. K. Reddy Morphometric analysis of the ultrastructural changes in rat liver induced by the peroxisome proliferator SaH 42-348 . . . . . . . . . . . . . . . 768 M. A. D'Agostino and M. M. Nass Specific changes in the synthesis of mitochondrial DNA in chick embryo fibroblasts transformed by Rous sarcoma viruses . . . . . . . . . . . . . . . . 781 J. A. Williams and M. Lee Microtubules and pancreatic amylase release by mouse pancreas in vitro . . . 795 H. M. Therien and W. E. Mushynski Isolation of synaptic junctional complexes of high structural integrity from rat brain . . . . . . . . . . . . . 807 B. H. Gibbons and K. Ogawa and I. R. Gibbons The effect of antidynein 1 serum on the movement of reactivated sea urchin sperm 823 D. T. Moran and J. C. Rowley and S. N. Zill and F. G. Varela The mechanism of sensory transduction in a mechanoreceptor. Functional stages in campaniform sensilla during the molting cycle . . . . . . . . . . . . . . . . . 832 K. Fujiwara and T. D. Pollard Fluorescent antibody localization of myosin in the cytoplasm, cleavage furrow, and mitotic spindle of human cells . . . . . . . . . . . . . . . . . 848 K. Apel and K. R. Miller and L. Bogorad and G. J. Miller Chloroplast membranes of the green alga Acetabularia mediterranea. II. Topography of the chloroplast membrane 876 K. T. Tokuyasu and S. J. Singer Improved procedures for immunoferritin labeling of ultrathin frozen sections 894 M. Pisam and P. Ripoche Redistribution of surface macromolecules in dissociated epithelial cells . . . . 907 J. M. Oliver and D. F. Albertini and R. D. Berlin Effects of glutathione-oxidizing agents on microtubule assembly and microtubule-dependent surface properties of human neutrophils . . . . . . . . . . 921 L. F. Johnson and R. Levis and H. T. Abelson and H. Green and S. Penman Changes in RNA in relation to growth of the fibroblast. IV. Alterations in theproduction and processing of mRNA and rRNA in resting and growing cells . . . 933 L. Miller and F. Gonzales The relationship of ribosomal RNA synthesis to the formation of segregated nucleoli and nucleolus-like bodies . . . 939 A. I. Kahri and M. Salmenperä and A. Saure Effects of $5$-bromodeoxyuridine on the ACTH-dependent mitochondrial biogenesis in cortical cells of fetal rat adrenals in tissue culture . . . . . . . . . . . 951 J. Silver and R. B. Billiar An autoradiographic analysis of [3H]alpha-bungarotoxin distribution in the rat brain after intraventricular injection . . . . . . . . . . . . . . . 956 V. N. Sakharov and N. Voronkova Nucleolus degradation and growth induced by uv-microbeam irradiation of interphase cells grown in culture . . . 963 B. A. Lord and D. R. DiBona Role of the septate junction in the regulation of paracellular transepithelial flow . . . . . . . . . . 967 H. Abe and M. A. Moscarello and J. M. Sturgess The distribution of anionic sites on the surface of the Golgi complex . . . . . . 973
L. L. Chu and R. R. MacGregor and D. V. Cohn Energy-dependent intracellular translocation of proparathormone . . . . 1 L. J. Crane and D. L. Miller Plasma protein synthesis by isolated rat hepatocytes . . . . . . . . . . . . . . 11 G. N. Fry and C. E. Devine and G. Burnstock Freeze-fracture studies of nexuses between smooth muscle cells. Close relationship to sarcoplasmic reticulum 26 E. Schmell and B. J. Earles and C. Breaux and W. J. Lennarz Identification of a sperm receptor on the surface of the eggs of the sea urchin Arbacia punctulata . . . . . . . 35 L. H. Margaritis and A. Elgsaeter and D. Branton Rotary replication for freeze-etching 47 S. E. Stuart and G. A. Clawson and F. M. Rottman and R. J. Patterson RNA transport in isolated myeloma nuclei. Transport from membrane-denuded nuclei . . . . . . . . . . . . . . . . . 57 B. Huang and M. R. Rifkin and D. J. Luck Temperature-sensitive mutations affecting flagellar assembly and function in Chlamydomonas reinhardtii 67 D. Giulian and E. G. Diacumakos The electrophysiological mapping of compartments within a mammalian cell . . 86 J. Carpentier and A. Perrelet and L. Orci Morphological changes of the adipose cell plasma membrane during lipolysis 104 R. H. Kirschner and M. Rusli and T. E. Martin Characterization of the nuclear envelope, pore complexes, and dense lamina of mouse liver nuclei by high resolution scanning electron microscopy 118 R. L. Weiss and D. A. Goodenough and U. W. Goodenough Membrane particle arrays associated with the basal body and with contractile vacuole secretion in Chlamydomonas . . . 133 R. L. Weiss and D. A. Goodenough and U. W. Goodenough Membrane differentiations at sites specialized for cell fusion . . . . . . 144 M. M. Salpeter and H. C. Fertuck and E. E. Salpeter Resolution in electron microscope autoradiography. III. Iodine-125, the effect of heavy metal staining, and a reassessment of critical parameters . . 161 L. C. Davidse and W. Flach Differential binding of methyl benzimidazol-$2$-yl carbamate to fungal tubulin as a mechanism of resistance to this antimitotic agent in mutant strains of Aspergillus nidulans . . . . . . . . 174 L. D. Hodge and P. Mancini and F. M. Davis and P. Heywood Nuclear matrix of HeLa S3 cells. Polypeptide composition during adenovirus infection and in phases of the cell cycle . . . . . . . . . . . . . 194 R. T. Gemmell and S. G. Laychock and R. P. Rubin Ultrastructural and biochemical evidence for a steroid-containing secretory organelle in the perfused cat adrenal gland . . . . . . . . . . . . . . . . . 209
S. H. Howell and J. W. Posakony and K. R. Hill The cell cycle program of polypeptide labeling in Chlamydomonas reinhardtii 223 D. Lawson and M. C. Raff and B. Gomperts and C. Fewtrell and N. B. Gilula Molecular events during membrane fusion. A study of exocytosis in rat peritoneal mast cells . . . . . . . . . . . . . . . 242 M. C. Williams Conversion of lamellar body membranes into tubular myelin in alveoli of fetal rat lungs . . . . . . . . . . . . . . . 260 M. Höchli and C. R. Hackenbrock Thermotropic lateral translational motion of intramembrane particles in the inner mitochondrial membrane and its inhibition by artificial peripheral proteins . . . . . . . . . . . . . . . . 278 A. C. Steven and B. Heggeler and R. Müller and J. Kistler and J. P. Rosenbusch Ultrastructure of a periodic protein layer in the outer membrane of \bionameEscherichia coli . . . . . . . . 292 K. M. Madyastha and J. E. Ridgway and J. G. Dwyer and C. J. Coscia Subcellular localization of a cytochrome P-450-dependent monogenase in vesicles of the higher plant Catharanthus roseus 302 J. Cachon and M. Cachon and L. G. Tilney and M. S. Tilney Movement generated by interactions between the dense material at the ends of microtubles and non-actin-containing microfilaments in Sticholonche zanclea 314 B. S. Eckert and R. H. Warren and R. W. Rubin Structural and biochemical aspects of cell motility in amebas of \bionameDictyostelium discoideum . . . . 339 M. W. Berns and J. B. Rattner and S. Brenner and S. Meredith The role of the centriolar region in animal cell mitosis. A laser microbeam study . . . . . . . . . . . . . . . . . 351 S. Brenner and A. Branch and S. Meredith and M. W. Berns The absence of centrioles from spindle poles of rat kangaroo (PtK2) cells undergoing meiotic-like reduction division in vitro . . . . . . . . . . . 368 P. Sherline and Y. C. Lee and L. S. Jacobs Binding of microtubules to pituitary secretory granules and secretory granule membranes . . . . . . . . . . . . . . . 380 J. P. Kraehenbuhl Dispersed mammary gland epithelial cells. I. Isolation and separation procedures . . . . . . . . . . . . . . . 390 J. P. Kraehenbuhl and L. Racine and J. D. Jamieson Immunocytochemical localization of secretory proteins in bovine pancreatic exocrine cells . . . . . . . . . . . . . 406 H. Gershman and J. Drumm and J. J. Rosen Dibutyryl cyclic AMP treatment of 3T3 and SV40 virus-transformed 3T3 cells in aggregates. Effects on mobility and cell contact ultrastructure . . . . . . . . . 424 A. Blouin and R. P. Bolender and E. R. Weibel Distribution of organelles and membranes between hepatocytes and nonhepatocytes in the rat liver parenchyma. A stereological study . . . . . . . . . . 441 R. R. Whitesell and R. A. Johnson and H. L. Tarpley and D. M. Regen Mitogen-stimulated glucose transport in thymocytes. Possible role of Ca++ and antagonism by adenosine 3': 5'-monophosphate . . . . . . . . . . . . 456 R. Wilson and K. S. Chiang Temporal programming of chloroplast and cytoplasmic ribosomal RNA transcription in the synchronous cell cycle of Chlamydomonas reinhardtii . . . . . . . 470 R. G. Anderson and C. E. Hein Distribution of anionic sites on the oviduct ciliary membrane . . . . . . . . 482 G. A. Rodan and L. A. Bourret and L. S. Cutler Membrane changes during cartilage maturation. Increase in 5'-nucleotidase and decrease in adenosine inhibition of adenylate cyclase . . . . . . . . . . . 493 L. M. Matthews Ca++ regulation in caffeine-derived microplasmodia of Physarum polycephalum 502
S. C. Miller and E. D. Hay and J. F. Codington Ultrastructural and histochemical differences in cell surface properties of strain-specific and nonstrain-specific TA3 adenocarcinoma cells . . . . . . . . . . . . . . . . . 511 G. K. Ojakian and G. Kreibich and D. D. Sabatini Mobility of ribosomes bound to microsomal membranes. A freeze-etch and thin-section electron microscope study of the structure and fluidity of the rough endoplasmic reticulum . . . . . . 530 W. Z. Cande and E. Lazarides and J. R. McIntosh A comparison of the distribution of actin and tubulin in the mammalian mitotic spindle as seen by indirect immunofluorescence . . . . . . . . . . . 552 O. S. Nilsson and G. Dallner Enzyme and phospholipid asymmetry in liver microsomal membranes . . . . . . . 568 J. D. Zeligs and S. H. Wollman Ultrastructure of blebbing and phagocytosis of blebs by hyperplastic thyroid epithelial cells in vivo . . . . 584 G. Albrecht-Buehler Daughter 3T3 cells. Are they mirror images of each other? . . . . . . . . . 595 G. I. Tennekoon and S. R. Cohen and D. L. Price and G. M. McKhann Myelinogenesis in optic nerve. A morphological, autoradiographic, and biochemical analysis . . . . . . . . . . 604 J. T. Powell and U. Järlfors and K. Brew Enzymic characteristics of fat globule membranes from bovine colostrum and bovine milk . . . . . . . . . . . . . . 617 C. Peracchia Gap junctions. Structural changes after uncoupling procedures . . . . . . . . . 628 L. A. Amos Arrangement of high molecular weight associated proteins on purified mammalian brain microtubules . . . . . . 642 L. S. Freilich and R. G. Lewis and A. C. Reppucci and J. E. Silbert Galactosyl transferase of a Golgi fraction from cultured neoplastic mast cells . . . . . . . . . . . . . . . . . 655 D. L. Hasty and E. D. Hay Freeze-fracture studies of the developing cell surface. I. The plasmalemma of the corneal fibroblast 667 T. Kuroiwa and S. Kawano and M. Hizume Studies on mitochondrial structure and function in Physarum polycephalum. V. Behaviour of mitochondrial nucleoids throughout mitochondrial division cycle 687 M. Mori and A. B. Novikoff Induction of pinocytosis in rat hepatocytes by partial hepatectomy . . . 695 B. Marchand and X. Mattei [A new type of flagellar structure. Type 9+n] . . . . . . . . . . . . . . . . . . 707 G. C. Shore and J. R. Tata Two fractions of rough endoplasmic reticulum from rat liver. I. Recovery of rapidly sedimenting endoplasmic reticulum in association with mitochondria . . . . . . . . . . . . . . 714 G. C. Shore and J. R. Tata Two fractions of rough endoplasmic reticulum from rat liver. II. Cytoplasmic messenger RNA's which code for albumin and mitochondrial proteins are distributed differently between the two fractions . . . . . . . . . . . . . 726 Y. Kitajima and G. A. Thompson \bionameTetrahymena strives to maintain the fluidity interrelationships of all its membranes constant. Electron microscope evidence . . . . . . . . . . 744 A. T. Suyama and J. A. Long and J. Ramachandran Ultrastructural changes induced by ACTH in normal adrenocortical cells in culture . . . . . . . . . . . . . . . . 757 B. Pauli and R. S. Weinstein and L. W. Soble and J. Alroy Freeze-fracture of monolayer cultures 763 R. A. Murphy and J. Oger and J. D. Saide and M. H. Blanchard and B. G. Arnason and C. Hogan and N. J. Pantazis Secretion of nerve growth factor by central nervous system glioma cells in culture . . . . . . . . . . . . . . . . 769 B. Nabarra and J. Charreire and J. F. Cavellier and J. F. Bach Ultrastructural study of spontaneous bone marrow rosette-forming cells . . . 773 Y. Shimada and T. Obinata Polarity of actin filaments at the initial stage of myofibril assembly in myogenic cells in vitro . . . . . . . . 777
N. K. Gonatas and S. U. Kim and A. Stieber and S. Avrameas Internalization of lectins in neuronal GERL . . . . . . . . . . . . . . . . . . 1 F. J. Longo An ultrastructural study of cross-fertilization (\bionameArbacia female X \bionameMytilus male) . . . . . 14 N. Hirokawa Disappearance of afferent and efferent nerve terminals in the inner ear of the chick embryo after chronic treatment with beta-bungarotoxin . . . . . . . . . 27 D. B. Rifkin and R. Pollack Production of plasminogen activator by established cell lines of mouse origin 47 A. Wiseman and N. W. Gillham and J. E. Boynton Nuclear mutations affecting mitochondrial structure and function in Chlamydomonas . . . . . . . . . . . . . 56 R. E. Ostlund and J. T. Leung and D. M. Kipnis Muscle actin filaments bind pituitary secretory granules in vitro . . . . . . 78 J. W. Mills and S. A. Ernst and D. R. DiBona Localization of Na+-pump sites in frog skin . . . . . . . . . . . . . . . . . . 88 D. F. Albertini and E. Anderson Microtubule and microfilament rearrangements during capping of concanavalin A receptors on cultured ovarian granulosa cells . . . . . . . . 111 Z. Darzynkiewicz and F. Traganos and T. Sharpless and M. R. Melamed Different sensitivity of DNA in situ in interphase and metaphase chromatin to heat denaturation . . . . . . . . . . . 128 A. Tait and J. K. Knowles Characterization of mitochondrial and cytoplasmic ribosomes from Paramecium aurelia . . . . . . . . . . . . . . . . 139 B. Daneholt and K. Anderson and M. Fagerlind Large-sized polysomes in Chironomus tentans salivary glands and their relation to Balbiani ring 75S RNA . . . 149 P. Pinto da Silva and M. L. Nogueira Membrane fusion during secretion. A hypothesis based on electron microscope observation of Phytophthora Palmivora zoospores during encystment . . . . . . 161 K. Ogawa and D. J. Asai and C. J. Brokaw Properties of an antiserum against native dynein 1 from sea urchin sperm flagella . . . . . . . . . . . . . . . . 182 I. L. Cameron and R. L. Sparks and K. L. Horn and N. R. Smith Concentration of elements in mitotic chromatin as measured by X-ray microanalysis . . . . . . . . . . . . . 193 A. S. Weissfeld and H. Rouse Continued initiation of DNA synthesis in arginine-deprived Chinese hamster ovary cells . . . . . . . . . . . . . . . . . 200 J. A. Grasso and N. C. Chromey and C. F. Moxey Biochemical characterization of RNA and protein synthesis in erythrocyte development . . . . . . . . . . . . . . 206 E. D. Jarasch and G. Bruder and T. W. Keenan and W. W. Franke Redox constituents in milk fat globule membranes and rough endoplasmic reticulum from lactating mammary gland 223 S. Hoffstein and I. M. Goldstein and G. Weissmann Role of microtubule assembly in lysosomal enzyme secretion from human polymorphonuclear leukocytes. A reevaluation . . . . . . . . . . . . . . 242 C. H. van Os and A. K. Mircheff and E. M. Wright Distribution of bicarbonate-stimulated ATPase in rat intestinal epithelium . . 257 L. Wieslander and B. Daneholt Demonstration of Balbiani ring RNA sequences in polysomes . . . . . . . . . 260
F. Wunderlich and G. Herlan Reversibly contractile nuclear matrix. Its isolation, structure, and composition . . . . . . . . . . . . . . 271 E. S. Goldring and W. J. Peacock Intramolecular heterogeneity of mitochondrial DNA of \bionameDrosophila melanogaster . . . . . . . . . . . . . . 279 R. W. Orkin and B. R. Williams and R. E. Cranley and D. C. Poppke and K. S. Brown Defects in the cartilaginous growth plates of brachymorphic mice . . . . . . 287 J. E. Vorhaben and J. W. Campbell Submitochondrial localization and function of enzymes of glutamine metabolism in avian liver . . . . . . . 300 W. Herth and A. Kuppel and E. Schnepf Chitinous fibrils in the lorica of the flagellate chrysophyte Poteriochromonas stipitata (syn. Ochromonas malhamensis) 311 L. Goldstein and G. E. Wise and C. Ko Small nuclear RNA localization during mitosis. An electron microscope study 322 D. M. Tarlow and P. A. Watkins and R. E. Reed and R. S. Miller and E. E. Zwergel and M. D. Lane Lipogenesis and the synthesis and secretion of very low density lipoprotein by avian liver cells in nonproliferating monolayer culture. Hormonal effects . . . . . . . . . . . . 332 C. M. Szego and M. B. Nazareno and D. D. Porter Estradiol-induced redistribution of lysosomal proteins in rat preputial gland. Evidence from immunologic probes 354 H. Gainer and Y. Sarne and M. J. Brownstein Biosynthesis and axonal transport of rat neurohypophysial proteins and peptides 366 J. S. Caruthers and M. A. Bonneville Isolation and characterization of the urothelial lumenal plasma membrane . . . 382 P. A. Armond and L. A. Staehelin and C. J. Arntzen Spatial relationship of photosystem I, photosystem II, and the light-harvesting complex in chloroplast membranes . . . . 400 T. R. Johnson and A. Kumar Ribosome processing in HeLa cells. Studies on structural aspects of precursor and mature ribosomes . . . . . 419 P. H. Naccache and H. J. Showell and E. L. Becker and R. I. Sha'afi Transport of sodium, potassium, and calcium across rabbit polymorphonuclear leukocyte membranes. Effect of chemotactic factor . . . . . . . . . . . 428 S. D. Banerjee and R. H. Cohn and M. R. Bernfield Basal lamina of embryonic salivary epithelia. Production by the epithelium and role in maintaining lobular morphology . . . . . . . . . . . . . . . 445 R. H. Cohn and S. D. Banerjee and M. R. Bernfield Basal lamina of embryonic salivary epithelia. Nature of glycosaminoglycan and organization of extracellular materials . . . . . . . . . . . . . . . 464 K. T. Edds Dynamic aspects of filopodial formation by reorganization of microfilaments . . 479 D. Raybin and M. Flavin Modification of tubulin by tyrosylation in cells and extracts and its effect on assembly in vitro . . . . . . . . . . . 492 R. L. Weiss Site-specific membrane particle arrays in magnesium-depleted \bionameEscherichia coli . . . . . . . . 505 V. Raghavan Patterns of DNA synthesis during pollen embryogenesis in henbane . . . . . . . . 521
M. F. Kramer and J. J. Geuze Glycoprotein transport in the surface mucous cells of the rat stomach . . . . 533 H. U. Lutz and S. C. Liu and J. Palek Release of spectrin-free vesicles from human erythrocytes during ATP depletion: 1. characterization of spectrin-free vesicles . . . . . . . . . . . . . . . . 548 P. S. Rudland and R. C. Hallowes and H. Durbin and D. Lewis Mitogenic activity of pituitary hormones on cell cultures of normal and carcinogen-induced tumor epithelium from rat mammary glands . . . . . . . . . . . 561 C. Patzelt and D. Brown and B. Jeanrenaud Inhibitory effect of colchicines on amylase secretion by rat parotid glands: possible localization in the Golgi area 578 B. Baccetti and R. Dallai and V. Pallini and F. Rosati and B. A. Afzelius Protein of insect sperm mitochondrial crystals. Crystallomitin . . . . . . . . 594 R. R. Gould and G. G. Borisy The pericentriolar material in Chinese hamster ovary cells nucleates microtubule formation . . . . . . . . . 601 R. Berezney and D. S. Coffey Nuclear matrix: isolation and characterization of a framework structure from rat liver nuclei . . . . 616 M. P. Sheetz and S. J. Singer On the mechanism of ATP-induced shape changes in human erythrocyte membranes. I. The role of the spectrin complex . . 638 W. Birchmeier and S. J. Singer On the mechanism of ATP-induced shape changes in the human erythrocyte membranes: the role of ATP . . . . . . . 647 S. J. Burwen and B. H. Satir A freeze-fracture study of early membrane events during mast cell secretion . . . . . . . . . . . . . . . 660 J. Mullins and J. J. Biesele Terminal phase of cytokinesis in D-98S cells . . . . . . . . . . . . . . . . . 672 C. R. Hopkins Short term kinetics of luteinizing hormone secretion studied in dissociated pituitary cells attached to manipulable substrates . . . . . . . . . . . . . . . 685 U. Lonn and J. E. Edstrom Movements and associations of ribosomal subunits in a secretory cell during growth inhibition by starvation . . . . 696 D. H. Tippit and J. D. Pickett-Heaps Mitosis in the pinnate diatom surirella ovalis . . . . . . . . . . . . . . . . . 705 A. J. Lusis and K. Paigen Relationships between levels of membrane-bound glucuronidase and the associated protein egasyn in mouse tissues . . . . . . . . . . . . . . . . 728 K. Von Der Mark and H. Von Der Mark Immunological and biochemical studies of collagen type transition during in vitro chondrogenesis of chick limb mesodermal cells . . . . . . . . . . . . . . . . . 736 G. G. Maul and L. Deaven Quantitative determination of nuclear pore complexes in cycling cells with differing DNA content . . . . . . . . . 748 G. L. Smith Increased ouabain-sensitive 86Rubidium uptake after mitogenic stimulation of quiescent chicken embryo fibroblasts with purified multiplication-stimulating activity . . . . . . . . . . . . . . . . 761 R. W. Kensler and P. Brink and M. M. Dewey Nexus of frog ventricle . . . . . . . . 768 M. H. Heggeness and J. F. Ash Use of the avidin-biotin complex for the localization of actin and myosin with fluorescence microscopy . . . . . . . . 783 G. W. Moy and B. Brandriff and V. D. Vacquier Cytasters from sea urchin eggs parthenogenetically activated by procaine . . . . . . . . . . . . . . . . 788
S. E. Hitchcock Regulation of motility in nonmuscle cells . . . . . . . . . . . . . . . . . 1 E. L. Giller and J. H. Neale and P. N. Bullock and B. K. Schrier and P. G. Nelson Choline acetyltransferase activity of spinal cord cell cultures increased by co-culture with muscle and by muscle-conditioned medium . . . . . . . 16 R. E. Jones and A. A. Moscona Effects of cytosine arabinoside on differential gene expression in embryonic neural retina. II. Immunochemical studies on the accumulation of glutamine synthetase . . 30 M. J. Grubman and J. A. Weinstein and D. A. Shafritz Studies on the mechanism for entry of vesicular stomatitis virus glycoprotein g mRNA into membrane-bound polyribosome complexes . . . . . . . . . . . . . . . 43 A. K. Balin and D. B. Goodman and H. Rasmussen and V. J. Cristofalo The effect of oxygen and vitamin E on the lifespan of human diploid cells in vitro . . . . . . . . . . . . . . . . . 58 A. R. Bellve and J. C. Cavicchia and C. F. Millette and D. A. O'Brien and Y. M. Bhatnagar and M. Dym Spermatogenic cells of the prepuberal mouse: isolation and morphological characterization . . . . . . . . . . . . 68 C. F. Millete and A. R. Bellve Temporal expression of membrane antigens during mouse spermatogenesis . . . . . . 86 M. Simionescu and N. Simionescu Organization of cell junctions in the peritoneal mesothelium . . . . . . . . . 98 M. P. Steinkamp and L. L. Hoefert Annulate lamellae in phloem cells of virus-infected Sonchus plants . . . . . 111 S. K. Basu and R. G. W. Anderson and J. L. Goldstein and M. S. Brown Metabolism of cationized lipoproteins by human fibroblasts: biochemical and morphologic correlations . . . . . . . . 119 P. K. Chowrashi and F. A. Pepe Light meromyosin paracrystal formation 136 T. Ducibella and T. Ukena and M. Karnovsky and E. Anderson Changes in cell surface and cortical cytoplasmic organization during early embryogenesis in the preimplantation mouse embryo . . . . . . . . . . . . . . 153 R. N. Chatterjee and A. S. Mukherjee Chromosomal basis of dosage compensation in \bionameDrosophila: IX. cellular autonomy of the faster replication of the X chromosome in haplo-x cells of \bionameDrosophila melanogaster and synchronous initiation . . . . . . . . . 168 R. S. Cohen and F. Blomberg and K. Berzins and P. Siekevitz The structure of postsynaptic densities isolated from dog cerebral cortex: I. overall morphology and protein composition . . . . . . . . . . . . . . 181 F. Blomberg and R. S. Cohen and P. Siekevitz The structure of postsynaptic densities isolated from dog cerebral cortex: II. characterization and arrangement of some of the major proteins within the structure . . . . . . . . . . . . . . . 204 W. W. Schlaepfer Immunological and ultrastructural studies of neurofilaments isolated from rat peripheral nerve . . . . . . . . . . 226 W. W. Schlaepfer and R. G. Lynch Immunofluorescence studies of neurofilaments in the rat and human peripheral and central nervous system 241 I. Mabuchi and M. Okuno The effect of myosin antibody on the division of starfish blastomeres . . . . 251 C. M. West and D. McMahon Identification of concanavalin A receptors and galactose-binding proteins in purified plasma membranes of \bionameDictyostelium discoideum . . . . 264 P. Karran and A. Moscona and B. Strauss Developmental decline in DNA repair in neural retina cells of chick embryos: persistent deficiency of repair competence in a cell line derived from late . . . . . . . . . . . . . . . . . . 274 A. O. Jorgensen and V. I. Kalnins and E. Zubrzyca and D. H. MacLennan Assembly of the sarcoplasmic reticulum proteins in differentiating rat skeletal muscle cell cultures: localization by immunofluorescence of sarcoplasmic reticulum proteins in differentiating rat skeletal muscle cell cultures . . . 287 W. G. Forssmann and S. Ito Hepatocyte innervation in primates . . . 299 G. C. Shore and R. Harris Fate of polypeptides synthesized on rough microsomal vesicles in a messenger-dependent rabbit reticulocyte system . . . . . . . . . . . . . . . . . 315 L. W. Coons and L. L. Espey Quantitation of nexus junctions in the granulosa cell layer of rabbit ovarian follicles during ovulation . . . . . . . 321 L. L. Murdock and M. A. Cahill and A. Reith Morphometry and ultrastructure of prismatic cristae in mitochondria of a crayfish muscle. A hypothesis of the structural principle . . . . . . . . . . 326
D. G. Pipeleers and M. A. Pipeleers-Marichal and P. Sherline and D. M. Kipnis A sensitive method for measuring polymerized and depolymerized forms of tubulin in tissues . . . . . . . . . . . 341 D. G. Pipeleers and M. A. Pipeleers-Marichal and D. M. Kipnis Physiological regulation of total tubulin and polymerized tubulin in tissues . . . . . . . . . . . . . . . . 351 H. F. Lodish and S. Froshauer Binding of viral glycoprotein mRNA to endoplasmic reticulum membranes is disrupted by puromycin . . . . . . . . . 358 A. C. Chan and I. G. Walker Loss of DNA repair capacity during successive subcultures of primary rat fibroblasts . . . . . . . . . . . . . . 365 P. Sherline and G. R. Mundy Role of the tubulin-microtubule system in lymphocyte activation . . . . . . . . 371 K. McDonald and J. D. Pickett-Heaps and J. R. McIntosh and D. H. Tippit On the mechanism of anaphase spindle elongation in Diatoma vulgare . . . . . 377 H. U. Lutz and A. J. Lomant and P. McMillan and E. Wehrli Rearrangements of integral membrane components during in vitro aging of sheep erythrocyte membranes . . . . . . 389 A. R. Hand and C. Oliver Relationship between the Golgi apparatus, GERL, and secretory granules in acinar cells of the rat exorbital lacrimal gland . . . . . . . . . . . . . 399 J. Kruppa and D. D. Sabatini Release of poly a(+) messenger RNA from rat liver rough microsomes upon disassembly of bound polysomes . . . . . 414 B. T. Schroeder and J. Chakraborty Binding of [(3)H]oxytocin to cells isolated from the mammary gland of the lactating rat . . . . . . . . . . . . . 428 N. H. Chua and N. W. Gillham The sites of synthesis of the principal thylakoid membrane polypeptides in Chlamydomonas reinhardtii . . . . . . . 441 S. Stenman and J. Wartiovaara and A. Vaheri Changes in the distribution of a major fibroblast protein, fibronectin, during mitosis and interphase . . . . . . . . . 453 J. W. Posakony and J. M. England and G. Attardi Mitochondrial growth and division during the cell cycle in HeLa cells . . . . . . 468 G. G. Maul Nuclear pore complexes. Elimination and reconstruction during mitosis . . . . . 492 R. J. Lasek and H. Gainer and J. L. Barker Cell-to-cell transfer of glial proteins to the squid giant axon: The glia- neuron protein transfer hypothesis . . . 501 H. Gainer and I. Tasaki and R. J. Lasek Evidence for the glia-neuron protein transfer hypothesis from intracellular perfusion studies of squid giant axons 524 R. E. Pagano and M. Takeichi Adhesion of phospholipid vesicles to Chinese hamster fibroblasts: Role of cell surface proteins . . . . . . . . . 531 R. G. Anderson Biochemical and cytochemical evidence for ATPase activity in basal bodies isolated from oviduct . . . . . . . . . 547 D. S. Friend and L. Orci and A. Perrelet and R. Yanagimachi Membrane particle changes attending the acrosome reaction in guinea pig spermatozoa . . . . . . . . . . . . . . 561 B. D. Noe and C. A. Baste and G. E. Bauer Studies on proinsulin and proglucagon biosynthesis and conversion at the subcellular level: I. Fractionation procedure and characterization of the subcellular fractions . . . . . . . . . 578 B. D. Noe and C. A. Baste and G. E. Bauer Studies on proinsulin and proglucagon biosynthesis and conversion at the subcellular level: II. Distribution of radioactive peptide hormones and hormone precursors in subcellular fractions after pulse and pulse- chase incubation of islet tissue . . . . . . . . . . . . 589 D. L. Caspar and D. A. Goodenough and L. Makowski and W. C. Phillips Gap junction structures. I. Correlated electron microscopy and X-ray diffraction . . . . . . . . . . . . . . 605 L. Makowski and D. L. D. Caspar and W. C. Phillips and D. A. Goodenough Gap junction structures: Analysis of the X-ray diffraction data . . . . . . . . . 629 K. M. Yamada and S. S. Yamada and I. Pastan Quantitation of a transformation-sensitive, adhesive cell surface glycoprotein. Decrease of several untransformed permanent cell lines . . . . . . . . . . . . . . . . . 649
W. Stäubli and W. Schweizer and J. Suter and E. R. Weibel The proliferative response of hepatic peroxidomes of neonatal rats to treatment with SU-13 437 (nafenopin) . . 665 S. J. Burwen and B. H. Satir Plasma membrane folds on the mast cell surface and their relationship to secretory activity . . . . . . . . . . . 690 C. D. Fuster and D. Farrell and F. A. Stern and N. B. Hecht RNA polymerase activity in bovine spermatozoa . . . . . . . . . . . . . . 698 M. Kalina and D. C. Pease Cyclic amp-induced morphological transformation of cells infected by temperature-sensitive mouse sarcoma virus: Expression of transformation-associated markers . . . 707 C. Rieder and A. S. Bajer Heat-induced reversible hexagonal packing of spindle microtubules . . . . 717 M. Kalina and D. C. Pease The preservation of ultrastructure in saturated phosphatidyl cholines by tannic acid in model systems and type II pneumocytes . . . . . . . . . . . . . . 726 M. Kalina and D. C. Pease The probable role of phosphatidyl cholines in the tannic acid enhancement of cytomembrane electron contrast . . . 742 W. L. Dentler and J. L. Rosenbaum Flagellar elongation and shortening in Chlamydomonas. III. structures attached to the tips of flagellar microtubules and their relationship to the directionality of flagellar microtubule assembly . . . . . . . . . . . . . . . . 747 G. F. Gauthier and S. Lowey Polymorphism of myosin among skeletal muscle fiber types . . . . . . . . . . . 760 H. G. Heidrich and M. E. Dew Homogeneous cell populations from rabbit kidney cortex. Proximal, distal tubule, and renin-active cell isolated by free-flow electrophoresis . . . . . . . 780 Y. Flashner and M. Schramm Retention of amylase in the secretory granules of parotid gland after extensive release of Ca++ by ionophore A-23187 . . . . . . . . . . . . . . . . 789 J. A. Schloss and A. Milsted and R. D. Goldman Myosin subfragment binding for the localization of actin-like microfilaments in cultured cells. A light and electron microscope study . . 794 J. B. Bard and K. Higginson Fibroblast-collagen interactions in the formation of the secondary stroma of the chick cornea . . . . . . . . . . . . . . 816 A. V. Somlyo and H. Shuman and A. P. Somlyo Elemental distribution in striated muscle and the effects of hypertonicity: Electron probe analysis of cryo sections 828 J. C. Wanson and P. Drochmans and R. Mosselmans and M. F. Ronveaux Adult rat hepatocytes in primary monolayer culture. Ultrastructural characteristics of intercellular contacts and cell membrane differentiations . . . . . . . . . . . . 858 D. Bernaert and J. C. Wanson and P. Drochmans and A. Popowski Effect of insulin on ultrastructure and glycogenesis in primary cultures of adult rat hepatocytes . . . . . . . . . 878 J. S. Condeelis and D. L. Taylor The contractile basis of amoeboid movement: V. The control of gelation, solation, and contraction in extracts from \bionameDictyostelium discoideum 901 I. I. Geschwind and J. M. Horowitz and G. M. Mikuckis and R. D. Dewey Iontophoretic release of cyclic AMP and dispersion of melanosomes within a single melanophore . . . . . . . . . . . 928 S. P. Scrodilis and J. L. Anderson and R. Pollack and R. S. Adelstein Characterization of the myosin-phosphorylating system in normal murine astrocytes and derivative sv40 wild-type and A-mutant transformant . . 940 G. L. Nicolson and N. Usui and R. Yanagimachi and H. Yanagimachi and Smith Lectin-binding sites on the plasma membranes of rabbit spermatozoa: Changes in surface receptors during epididymal maturation and after ejaculation . . . . 950 P. B. Bell Locomotory behavior, contact inhibition, and pattern formation of 3T3 and polyoma virus-transformed 3T3 cells in culture 963 M. R. Neutra and S. F. Schaeffer Membrane interactions between adjacent mucols secretion granules . . . . . . . 983 J. Paiement and C. P. Leblond Localization of thyroglobulin antigenicity in rat thyroid sections using antibodies labled with peroxidase or (125)I-radioiodine . . . . . . . . . 992 D. J. Morton and F. M. Clarke and C. J. Masters An electron microscope study of the interaction between fructose diphosphate aldolase and actin-containing filaments 1016 R. J. Sanderson and A. E. Vatter A mode of formation of tubular myelin from lamellar bodies in the lung . . . . 1027 D. R. Burgess and T. E. Schroeder Polarized bundles of actin filaments within microvilli of fertilized sea urchin eggs . . . . . . . . . . . . . . 1032
M. Willard The identification of two intra-axonally transported polypeptides resembling myosin in some respects in the rabbit visual system . . . . . . . . . . . . . 1 G. E. Palade Keith Roberts Porter and the development of contemporary cell biology . . . . . . ?? J. T. Tupper and F. Zorgniotti Calcium content and distribution as a function of growth and transformation in the mouse 3T3 cell . . . . . . . . . . . 12 L. Orci and A. Perrelet and D. S. Friend Freeze-fracture of membrane fusions during exocytosis in pancreatic B-cells 23 S. T. Rohrlich and D. B. Rifkin Patterns of plasminogen activator production in cultured normal embryonic cells . . . . . . . . . . . . . . . . . 31 N. Morel and M. Israel and R. Manaranche and P. Mastour-Frachon Isolation of pure cholinergic nerve endings from Torpedo electric organ. Evaluation of their metabolic properties 43 D. R. McClay and L. R. Godding and M. E. Fransen A requirement for trypsin-sensitive cell-surface components for cell--cell interactions of embryonic neural retina cells . . . . . . . . . . . . . . . . . 56 M. Schachner and E. T. Hedley-Whyte and D. W. Hsu and G. Schoonmaker and A. Bignami Ultrastructural localization of glial fibrillary acidic protein in mouse cerebellum by immunoperoxidase labeling 67 S. A. Ernst and J. W. Mills Basolateral plasma membrane localization of ouabain-sensitive sodium transport sites in the secretory epithelium of the avian salt gland . . . . . . . . . . . . 74 R. R. Weihing Effects of myosin and heavy meromyosin on actin-related gelation of HeLa cell extracts . . . . . . . . . . . . . . . . 95 S. C. Miller Osteoclast cell-surface changes during the egg-laying cycle in Japanese quail 104 C. M. Cohen and D. I. Kalish and B. S. Jacobson and D. Branton Membrane isolation on polylysine-coated beads. Plasma membrane from HeLa cells 119 A. L. Blitz and R. E. Fine and P. A. Toselli Evidence that coated vesicles isolated from brain are calcium-sequestering organelles resembling sarcoplasmic reticulum . . . . . . . . . . . . . . . 135 A. B. Novikoff and M. Mori and N. Quintana and A. Yam Studies of the secretory process in the mammalian exocrine pancreas. I. The condensing vacuoles . . . . . . . . . . 148 S. Fowler and H. Shio and H. Wolinsky Subcellular fractionation and morphology of calf aortic smooth muscle cells: studies on whole aorta, aortic explants, and subcultures grown under . . . . . . 166 M. T. Mazur and Williamson Macrophage deformability and phagocytosis . . . . . . . . . . . . . . 185 A. Ryter and C. de Chastellier Morphometric and cytochemical studies of \bionameDictyostelium discoideum in vegetative phase. Digestive system and membrane turnover . . . . . . . . . . . 200 C. De Chastellier and A. Ryter Changes of the cell surface and of the digestive apparatus of \bionameDictyostelium discoideum during the starvation period triggering aggregation . . . . . . . . . . . . . . 218 R. B. Marchase Biochemical investigations of retinotectal adhesive specificity . . . 237 T. L. Lentz and J. Chester Localization of acetylcholine receptors in central synapses . . . . . . . . . . 258 R. L. Hallberg and C. A. Sutton Nonidentity of ribosomal structural proteins in growing and starved \bionameTetrahymena . . . . . . . . . . 268 E. K. Gallin and J. I. Gallin Interaction of chemotactic factors with human macrophages: induction of transmembrane potential changes . . . . 277
T. Wallimann and D. C. Turner and H. M. Eppenberger Localization of creatine kinase isoenzymes in myofibrils. I. Chicken skeletal muscle . . . . . . . . . . . . 297 T. Wallimann and H. J. Kuhn and G. Pelloni and D. C. Turner and H. M. Eppenberger Localization of creatine kinase isoenzymes in myofibrils. II. Chicken heart muscle . . . . . . . . . . . . . . 318 R. M. Gould Incorporation of glycoproteins into peripheral nerve myelin . . . . . . . . 326 A. Flock and H. C. Cheung Actin filaments in sensory hairs of inner ear receptor cells . . . . . . . . 339 G. P. Matarese and G. B. Rossi Effect of interferon on growth and division cycle of Friend erythroleukemic murine cells in vitro . . . . . . . . . 344 B. J. Reid and L. H. Hartwell Regulation of mating in the cell cycle of Saccharomyces cerevisiae . . . . . . 355 M. M. Dewey and B. Walcott and D. E. Colflesh and H. Terry and R. J. Levine Changes in thick filament length in Limulus striated muscle . . . . . . . . 366 E. Essner and H. Haimes Ultrastructural study of GERL in beige mouse alveolar macrophages . . . . . . . 381 S. Lustig and O. Ascher and P. Fishman and M. Djaldetti and D. H. Pluznik Correlation between movement of concanavalin A membrane receptors and cytolysis. A scanning electron microscopy study . . . . . . . . . . . . 388 L. Rall and R. Pictet and S. Githens and W. J. Rutter Glucocorticoids modulate the in vitro development of the embryonic rat pancreas . . . . . . . . . . . . . . . . 398 C. G. Glabe and V. D. Vacquier Isolation and characterization of the vitelline layer of sea urchin eggs . . . 410 L. H. Hartwell and M. W. Unger Unequal division in Saccharomyces cerevisiae and its implications for the control of cell division . . . . . . . . 422 Y. Kitajima and G. A. Thompson Differentiation of food vacuolar membranes during endocytosis in \bionameTetrahymena . . . . . . . . . . 436 S. R. Hilfer and G. L. Pakstis Interference with thyroid histogenesis by inhibitors of collagen synthesis . . 446 M. Takeichi Functional correlation between cell adhesive properties and some cell surface proteins . . . . . . . . . . . . 464 M. Edidin and T. Y. Wei Diffusion rates of cell surface antigens of mouse-human heterokaryons. I. Analysis of the population . . . . . . . 475 M. Edidin and T. Y. Wei Diffusion rates of cell surface antigens of mouse-human heterokaryons. II. Effect of membrane potential on lateral diffusion . . . . . . . . . . . . . . . 483 J. G. Hollyfield and J. C. Besharse and M. E. Rayborn Turnover of rod photoreceptor outer segments. I. Membrane addition and loss in relationship to temperature . . . . . 490 J. C. Besharse and J. G. Hollyfield and M. E. Rayborn Turnover of rod photoreceptor outer segments. II. Membrane addition and loss in relationship to light . . . . . . . . 507 C. R. Hopkins and H. Gregory Topographical localization of the receptors for luteinizing hormone-releasing hormone on the surface of dissociated pituitary cells . . . . . 528 H. R. Byers and K. R. Porter Transformations in the structure of the cytoplasmic ground substance in erythrophores during pigment aggregation and dispersion. I. A study using whole-cell preparations in stereo high voltage electron microscopy . . . . . . 541 E. P. Reaven and G. M. Reaven Distribution and content of microtubules in relation to the transport of lipid. An ultrastructural quantitative study of the absorptive cell of the small intestine . . . . . . . . . . . . . . . 559 G. Olivetti and P. Anversa and W. Rigamonti and L. Vitali-Mazza and A. V. Loud Morphometry of the renal corpuscle during normal postnatal growth and compensatory hypertrophy. A light microscope study . . . . . . . . . . . . 573 R. E. Gordon and B. P. Lane and F. Miller Electron microscope demonstration of tubulin in cilia and basal bodies of rat tracheal epithelium by the use of an antitubulin antibody . . . . . . . . . . 586 C. H. Damsky and J. B. Sheffield and G. P. Tuszynski and L. Warren Is there a role for actin in virus budding? . . . . . . . . . . . . . . . . 593 S. H. Zigmond Ability of polymorphonuclear leukocytes to orient in gradients of chemotactic factors . . . . . . . . . . . . . . . . 606
N. Deguchi and P. L. Jorgensen and A. B. Maunsbach Ultrastructure of the sodium pump: Comparison of thin sectioning, negative staining, and freeze-fracture of purified, membrane-bound (Na$^+$, K$^+$)-ATPase . . . . . . . . . . . . . 619 P. H. Naccache and H. J. Showell and E. L. Becker and R. I. Sha'afi Changes in ionic movements across rabbit polymorphonuclear leukocyte membranes during lysosomal enzyme release. Possible ionic basis for lysosomal enzyme release . . . . . . . . . . . . . 635 C. J. Brokaw and T. F. Simonick Motility of triton-demembranated sea urchin sperm flagella during digestion by trypsin . . . . . . . . . . . . . . . 650 H. L. Malech and R. K. Root and J. I. Gallin Structural analysis of human neutrophil migration: Centriole, microtubule, and microfilament orientation and function during chemotaxis . . . . . . . . . . . 666 L. L. Chun and P. H. Patterson Role of nerve growth factor in the development of rat sympathetic neurons in vitro. I. Survival, growth, and differentiation of catecholamine production . . . . . . . . . . . . . . . 694 L. L. Chun and P. H. Patterson Role of nerve growth factor in the development of rat sympathetic neurons in vitro. II. Developmental studies . . 705 L. L. Chun and P. H. Patterson Role of nerve growth factor in the development of rat sympathetic neurons in vitro. III. Effect on acetylcholine production . . . . . . . . . . . . . . . 712 G. I. Viamontes and D. L. Kirk Cell shape changes and the mechanism of inversion in Volvox . . . . . . . . . . 719 E. P. Reaven and Y. Cheng and M. D. Miller Quantitative analysis of tubulin and microtubule compartments in isolated rat hepatocytes . . . . . . . . . . . . . . 731 V. Mautner and R. O. Hynes Surface distribution of LETS protein in relation to the cytoskeleton of normal and transformed cells . . . . . . . . . 743 M. L. Epstein and N. B. Gilula A study of communication specificity between cells in culture . . . . . . . . 769 N. Kalderon and M. L. Epstein and N. B. Gilula Cell-to-cell communication and myogenesis . . . . . . . . . . . . . . . 788 D. W. Stacey and V. G. Allfrey Evidence for the autophagy of microinjected proteins in HeLA cells . . 807 M. A. Goldstein and J. P. Schroeter and R. L. Sass Optical diffraction of the Z lattice in canine cardiac muscle . . . . . . . . . 818 R. L. Gulley and R. J. Wenthold and G. R. Neises Remodeling of neuronal membranes as an early response to deafferentation. A freeze-fracture study . . . . . . . . . 837 D. M. Woolley Evidence for ``twisted plane'' undulations in golden hamster sperm tails . . . . . . . . . . . . . . . . . 851 A. Helenius and E. Fries and J. Kartenbeck Reconstitution of Semliki forest virus membrane . . . . . . . . . . . . . . . . 866 A. S. Weissfeld and H. Rouse Arginine deprivation in KB cells: I. Effect on cell cycle progress . . . . . 881 A. S. Weissfeld and H. Rouse Arginine deprivation in KB cells. II. Characterization of the DNA synthesized during starvation . . . . . . . . . . . 889 N. K. Detering and G. L. Decker and E. D. Schmell and W. J. Lennarz Isolation and characterization of plasma membrane-associated cortical granules from sea urchin eggs . . . . . . . . . . 899 E. Trenkner and R. L. Sidman Histogenesis of mouse cerebellum in microwell cultures. Cell reaggregation and migration, fiber and synapse formation . . . . . . . . . . . . . . . 915 W. A. Davies and T. P. Stossel Peripheral hyaline blebs (podosomes) of macrophages . . . . . . . . . . . . . . 941 J. H. Hartwig and W. A. Davies and T. P. Stossel Evidence for contractile protein translocation in macrophage spreading, phagocytosis, and phagolysosome formation . . . . . . . . . . . . . . . 956 J. W. Mills and D. R. DiBona On the distribution of Na+ pump sites in the frog skin . . . . . . . . . . . . . 968 M. W. Berns and S. M. Richardson Continuation of mitosis after selective laser microbeam destruction of the centriolar region . . . . . . . . . . . 977 R. A. Bloodgood Motility occurring in association with the surface of the Chlamydomonas flagellum . . . . . . . . . . . . . . . 983 R. Craig and J. Megerman Assembly of smooth muscle myosin into side-polar filaments . . . . . . . . . . 990
P. M. Novikoff and A. Yam Sites of lipoprotein particles in normal rat hepatocytes . . . . . . . . . . . . 1 E. M. Fenwick and P. B. Fajdiga and N. B. Howe and B. G. Livett Functional and morphological characterization of isolated bovine adrenal medullary cells . . . . . . . . 12 K. S. Carlisle and C. S. Chew and S. J. Hersey Ultrastructural changes and cyclic AMP in frog oxyntic cells . . . . . . . . . 31 R. L. Juliano Adhesion and detachment characteristics of Chinese hamster cell membrane mutants 43 W. W. Schlaepfer Observations on the disassembly of isolated mammalian neurofilaments . . . 50 C. J. Connell A freeze-fracture and lanthanum tracer study of the complex junction between Sertoli cells of the canine testis . . . 57 J. Rosenbluth Particle arrays in earthworm postjunctional membranes . . . . . . . . 76 J. J. Bergeron and D. Borts and J. Cruz Passage of serum-destined proteins through the Golgi apparatus of rat liver. An examination of heavy and light Golgi fractions . . . . . . . . . . . . 87 R. E. Allen and M. H. Stromer and D. E. Goll and R. M. Robson Sythesis of tropomyosin in cultures of differentiating muscle cells . . . . . . 98 H. Hayashi and H. W. Jarrett and J. T. Penniston Peripheral proteins and smooth membrane from erythrocyte ghosts. Segregation of ATP-utilizing enzymes into smooth membrane . . . . . . . . . . . . . . . . 105 J. D. Berger and H. J. Schmidt Regulation of macronuclear DNA content in Paramecium tetraurelia . . . . . . . 116 M. M. Salpeter and F. A. McHenry and E. E. Salpeter Resolution of electron microscope autoradiography. IV. Application to analysis of autoradiographs . . . . . . 127 Y. Fukui Intranuclear actin bundles induced by dimethyl sulfoxide in interphase nucleus of \bionameDictyostelium . . . . . . . . 146 P. L. Moore and H. L. Bank and N. T. Brissie and S. S. Spicer Phagocytosis of bacteria by polymorphonuclear leukocytes: a freeze-fracture, scanning electron microscope, and thin-section investigation of membrane structure . . 158 A. J. Vermorken and J. M. Hilderink and W. J. van de Ven and H. Bloemendal Lens differentiation. Crystallin synthesis in isolated epithelia from calf lenses . . . . . . . . . . . . . . 175 J. Coll and V. M. Ingram Stimulation of heme accumulation and erythroid colony formation in cultures of chick bone marrow cells by chicken plasma . . . . . . . . . . . . . . . . . 184 M. Bornens and J. C. Courvalin Isolation of nuclear envelopes with polyanions . . . . . . . . . . . . . . . 191 C. Oliver and A. R. Hand Uptake and fate of luminally administered horseradish peroxidase in resting and isoproterenol-stimulated rat parotid acinar cells . . . . . . . . . . 207 G. B. Pierson and P. R. Burton and R. H. Himes Alterations in number of protofilaments in microtubules assembled in vitro . . . 223 M. Schliwa and M. Osborn and K. Weber Microtubule system of isolated fish melanophores as revealed by immunofluorescence microscopy . . . . . 229 D. M. Fambrough and P. N. Devreotes Newly synthesized acetylcholine receptors are located in the Golgi apparatus . . . . . . . . . . . . . . . 237 R. Coleman and R. M. Bell Evidence that biosynthesis of phosphatidylethanolamine, phosphatidylcholine, and triacylglycerol occurs on the cytoplasmic side of microsomal vesicles . . . . . . . . . . 245
I. Nenci and E. Marchetti Concerning the localization of steroids in centrioles and basal bodies by immunofluorescence . . . . . . . . . . . 255 F. D. Warner and D. R. Mitchell Structural conformation of ciliary dynein arms and the generation of sliding forces in Tetrahymena cilia . . 261 J. L. Shaver and C. Stirling Ouabain binding to renal tubules of the rabbit . . . . . . . . . . . . . . . . . 278 A. H. Fairlamb and P. O. Weislogel and J. H. Hoeijmakers and P. Borst Isolation and characterization of kinetoplast DNA from bloodstream form of Trypanosoma brucei . . . . . . . . . . . 293 R. Rikmenspoel Movement of sea urchin sperm flagella 310 J. D. Castle and G. E. Palade Secretion granules of the rabbit parotid. Selective removal of secretory contaminants from granule membranes . . 323 S. L. Wissig and M. C. Williams Permeability of muscle capillaries to microperoxidase . . . . . . . . . . . . 341 S. J. Atlas and S. Lin Dihydrocytochalasin B. Biological effects and binding to 3T3 cells . . . . 360 D. E. Chandler and J. A. Williams Intracellular divalent cation release in pancreatic acinar cells during stimulus-secretion coupling. I. Use of chlorotetracycline as fluorescent probe 371 D. E. Chandler and J. A. Williams Intracellular divalent cation release in pancreatic acinar cells during stimulus-secretion coupling. II. Subcellular localization of the fluorescent probe chlorotetracycline . . 386 D. M. Nelson and A. C. Enders and B. F. King Cytological events involved in protein synthesis in cellular and syncytial trophoblast of human placenta. An electron microscope autoradiographic study of [3H]leucine incorporation . . . 400 D. M. Nelson and A. C. Enders and B. F. King Cytological events involved in glycoprotein synthesis in cellular and syncytial trophoblast of human placenta. An electron microscope autoradiographic study of [3H]galactose incorporation . . 418 U. W. Goodenough and R. L. Weiss Interrelationships between microtubules, a striated fiber, and the gametic mating structure of Chlamydomonas reinhardi . . 430 B. R. Burchill and J. M. Oliver and C. B. Pearson and E. D. Leinbach and R. D. Berlin Microtubule dynamics and glutathione metabolism in phagocytizing human polymorphonuclear leukocytes . . . . . . 439 J. C. Gilkey and L. F. Jaffe and E. B. Ridgway and G. T. Reynolds A free calcium wave traverses the activating egg of the medaka, Oryzias latipes . . . . . . . . . . . . . . . . 448 N. Savion and Z. Selinger Morphological changes in rat pancreatic slices associated with inhibition of enzyme secretion by high concentrations of secretagogues . . . . . . . . . . . . 467 M. M. Poo and W. J. Poo and J. W. Lam Lateral electrophoresis and diffusion of Concanavalin A receptors in the membrane of embryonic muscle cell . . . . . . . . 483 J. R. Mendell and J. N. Whitaker Immunocytochemical localization studies of myelin basic protein . . . . . . . . 502 D. Shotton and K. Thompson and L. Wofsy and D. Branton Appearance and distribution of surface proteins of the human erythrocyte membrane. An electron microscope and immunochemical labeling study . . . . . 512 J. D. Sheridan and M. Hammer-Wilson and D. Preus and R. G. Johnson Quantitative analysis of low-resistance junctions between cultured cells and correlation with gap-junctional areas 532 N. W. Seeds and R. B. Maccioni Proteins from morphologically differentiated neuroblastoma cells promote tubulin polymerization . . . . . 547
G. Gabbiani and C. Chaponnier and I. Hüttner Cytoplasmic filaments and gap junctions in epithelial cells and myofibroblasts during wound healing . . . . . . . . . . 561 B. Baccetti and R. Dallai The spermatozoon of arthropoda. XXX. The multiflagellate spermatozoon in the termite Mastotermes darwiniensis . . . . 569 A. Karlin and E. Holtzman and R. Valderrama and V. Damle and K. Hsu and F. Reyes Binding of antibodies to acetylcholine receptors in Electrophorus and Torpedo electroplax membranes . . . . . . . . . 577 W. T. O'Day and R. W. Young Rhythmic daily shedding of outer-segment membranes by visual cells in the goldfish . . . . . . . . . . . . . . . . 593 M. Schliwa Microtubular apparatus of melanophores: three dimensional organization . . . . . 605 S. C. Miller Rapid activation of the medullary bone osteoclast cell surface by parathyroid hormone . . . . . . . . . . . . . . . . 615 J. I. Clark and D. Garland Fluorescein colchicine. Synthesis, purification, and biological activity 619 M. Sieber-Blum and A. M. Cohen Lectin binding to neural crest cells. Changes of the cell surface during differentiation in vitro . . . . . . . . 628 H. Gershman and J. J. Rosen Cell adhesion and cell surface topography in aggregates of 3T3 and SV40-virus-transformed 3T3 cells. Visualization of interior cells by scanning electron microscopy . . . . . . 639 I. B. Täljedal Chlorotetracycline as a fluorescent Ca$^{2+}$ probe in pancreatic islet cells . . . . . . . . . . . . . . . . . 652 T. E. Miller and C. Y. Huang and A. O. Pogo Rat liver nuclear skeleton and ribonucleoprotein complexes containing HnRNA . . . . . . . . . . . . . . . . . 675 T. E. Miller and C. Y. Huang and A. O. Pogo Rat liver nuclear skeleton and small molecular weight RNA species . . . . . . 692 Rh Rice and H. Green Relation of protein synthesis and transglutaminase activity to formation of the cross-linked envelope during terminal differentiation of the cultured human epidermal keratinocyte . . . . . . 705 H. Gross and E. Bas and H. Moor Freeze-fracturing in ultrahigh vacuum at $ - 196 $ degrees C . . . . . . . . . . 712 G. B. Witman and J. Plummer and G. Sander Chlamydomonas flagellar mutants lacking radial spokes and central tubules. Structure, composition, and function of specific axonemal components . . . . . . 729 K. Hedman and A. Vaheri and J. Wartiovaara External fibronectin of cultured human fibroblasts is predominantly a matrix protein . . . . . . . . . . . . . . . . 748 B. C. Lu Meiosis in \bionameCoprinus. VIII. A time-course study of the fusion and division of the spindle pole body during meiosis . . . . . . . . . . . . . . . . 761 A. Peixoto de Menezes and P. Pinto da Silva Freeze-fracture observations of the lactating rat mammary gland. Membrane events during milk fat secretion . . . . 767 J. A. Connolly and V. I. Kalnins and D. W. Cleveland and M. W. Kirschner Intracellular localization of the high molecular weight microtubule accessory protein by indirect immunofluorescence 781 M. A. Hardy Intracellular calcium as a modulator of transepithelial permeability to water in frog urinary bladder . . . . . . . . . . 787
M. E. Schwab and H. Thoenen Selective binding, uptake, and retrograde transport of tetanus toxin by nerve terminals in the rat iris. An electron microscope study using colloidal gold as a tracer . . . . . . . 1 A. R. Hardham and B. E. Gunning Structure of cortical microtubule arrays in plant cells . . . . . . . . . . . . . 14 G. R. Johnson and A. W. Burgess Molecular and biological properties of a macrophage colony-stimulating factor from mouse yolk sacs . . . . . . . . . . 35 A. B. Eastwood and D. S. Wood and J. P. Reuben Unusual thick and thin filament packing in a crustacean muscle . . . . . . . . . 48 J. M. Robinson and R. T. Briggs and M. J. Karnovsky Localization of D-amino acid oxidase on the cell surface of human polymorphonuclear leukocytes . . . . . . 59 M. Aikawa and L. H. Miller and J. Johnson and J. Rabbege Erythrocyte entry by malarial parasites. A moving junction between erythrocyte and parasite . . . . . . . . . . . . . . 72 D. K. Berg and G. D. Fischbach Enrichment of spinal cord cell cultures with motoneurons . . . . . . . . . . . . 83 G. C. Yeoh and D. Greenstein and H. Holtzer DNA polymerase activity in muscle cultures . . . . . . . . . . . . . . . . 99 J. H. Willison and R. M. Brown Cell wall structure and deposition in Glaucocystis . . . . . . . . . . . . . . 103 P. R. Burton and R. H. Himes Electron microscope studies of pH effects on assembly of tubulin free of associated proteins. Delineation of substructure by tannic acid staining . . 120 R. D. Lang and J. R. Bronk A study of rapid mitochondrial structural changes in vitro by spray-freeze-etching . . . . . . . . . . 134 L. L. Chen and J. C. Adams and R. M. Steinman Anatomy of germinal centers in mouse spleen, with special reference to ``follicular dendritic cells'' . . . . . 148 S. A. Minami and U. W. Goodenough Novel glycopolypeptide synthesis induced by gametic cell fusion in Chlamydomonas reinhardtii . . . . . . . . . . . . . . 165 K. Fujiwara and T. D. Pollard Simultaneous localization of myosin and tubulin in human tissue culture cells by double antibody staining . . . . . . . . 182 D. S. Papermaster and B. G. Schneider and M. A. Zorn and J. P. Kraehenbuhl Immunocytochemical localization of opsin in outer segments and Golgi zones of frog photoreceptor cells. An electron microscope analysis of cross-linked albumin-embedded retinas . . . . . . . . 196 A. Monneron and J. d'Alayer Isolation of plasma and nuclear membranes of thymocytes. I. Enzymatic composition and ultrastructure . . . . . 211 A. Monneron and J. d'Alayer Isolation of plasma and nuclear membranes of thymocytes. II. Biochemical composition . . . . . . . . . . . . . . 232 G. Setterfield and R. Sheinin and I. Dardick and G. Kiss and M. Dubsky Structure of interphase nuclei in relation to the cell cycle. Chromatin organization in mouse L cells temperature-sensitive for DNA replication . . . . . . . . . . . . . . 246 A. Graessmann and M. Graessmann and E. Guhl and C. Mueller Quantitative correlation between simian virus 40 T-antigen synthesis and late viral gene expression in permissive and nonpermissive cells . . . . . . . . . . ?? P. Sherline and K. Schiavone High molecular weight MAPs are part of the mitotic spindle . . . . . . . . . . ??
S. H. Broderson and D. L. Patton and W. L. Stahl Fine structural localization of potassium-stimulated rho nitrophenylphosphatase activity in denrites of the cerebral cortex . . . . ?? S. H. Zigmond Chemotaxis by polymorphonuclear leukocytes . . . . . . . . . . . . . . . 269 H. A. Reggio and G. E. Palade Sulfated compounds in the zymogen granules of the guinea pig pancreas . . 288 J. Cartaud and S. Bon and J. Massoulié Electrophorus acetylcholinesterase. Biochemical and electron microscope characterization of low ionic strength aggregates . . . . . . . . . . . . . . . 315 W. W. Franke and C. Grund and E. Schmid and E. Mandelkow Paracrystalline arrays of membrane-to-membrane cross bridges associated with the inner surface of plasma membrane . . . . . . . . . . . . 323 E. L. Becker and V. Talley and H. J. Showell and P. H. Naccache and R. I. Sha'afi Activation of the rabbit polymorphonuclear leukocyte membrane ``Na+, K+''-ATPase by chemotactic factor 329 A. F. Horwitz and A. Wight and P. Ludwig and R. Cornell Interrelated lipid alterations and their influence on the proliferation and fusion of cultured myogenic cells . . . 334 L. M. Routledge Calcium-binding proteins in the vorticellid spasmoneme . . . . . . . . . 358 F. A. Rawlins and J. Villegas Autoradiographic localization of acetylcholine receptors in the Schwann cell membrane of the squid nerve fiber 371 P. F. Bartlett and M. Edidin Effect of the H-2 gene complex rates of fibroblast intercellular adhesion . . . 377 M. H. Fukami and J. S. Bauer and G. J. Stewart and L. Salganicoff An improved method for the isolation of dense storage granules from human platelets . . . . . . . . . . . . . . . 389 C. M. Redman and D. Banerjee and C. Manning and C. Y. Huang and K. Green In vivo effect of colchicine on hepatic protein synthesis and on the conversion of proalbumin to serum albumin . . . . . 400 C. D. Stoner and H. D. Sirak Magnesium-induced inner membrane aggregation in heart mitochondria: prevention and reversal by carboxyatractyloside and bongkrekic acid 417 T. G. Clark and R. W. Merriam Actin in \bionameXenopus oocytes . . . . 427 R. W. Merriam and T. G. Clark Actin in \bionameXenopus oocytes: II. Intracellular distribution and polymerizability . . . . . . . . . . . . 439 E. Costantino-Ceccarini and P. M. Novikoff and P. H. Atkinson and A. B. Novikoff Further characterization of HeLa S3 plasma membrane ghosts . . . . . . . . . 448 G. Kreibich and B. L. Ulrich and D. D. Sabatini Proteins of rough microsomal membranes related to ribosome binding. I. Identification of ribophorins I and II, membrane proteins characteristics of rough microsomes . . . . . . . . . . . . 464 G. Kreibich and C. M. Freienstein and B. N. Pereyra and B. L. Ulrich and D. D. Sabatini Proteins of rough microsomal membranes related to ribosome binding. II. Cross-linking of bound ribosomes to specific membrane proteins exposed at the binding sites . . . . . . . . . . . 488 F. Cortese and J. Wolf Cytochalasin-stimulated steroidogenesis from high density lipoproteins . . . . . 507 G. Schatten and M. Thoman Nuclear surface complex as observed with the high resolution scanning electron microscope. Visualization of the membrane surfaces of the neclear envelope and the nuclear cortex from \bionameXenopus laevis oocytes . . . . . 517 L. G. Tilney and D. P. Kiehart and C. Sardet and M. Tilney Polymerization of actin. IV. Role of Ca++ and H+ in the assembly of actin and in membrane fusion in the acrosomal reaction of echinoderm sperm . . . . . . 536 L. G. Tilney Polymerization of actin. V. A new organelle, the actomere, that initates the assembly of actin filaments in Thyone sperm . . . . . . . . . . . . . . 551 R. P. Bolender and D. Paumgartner and G. Losa and D. Muellener and E. R. Weibel Intergrated stereological and biochemical studies of hepatocytic membranes. I. Membrane recoveries in subcellular fractions . . . . . . . . . 565 E. R. Weibel and D. Paumgartner Integrated stereological and biochemical studies on hepatocytic membranes. II. Correction of section thickness effect on volume and surface density estimates 584 J. W. Mills and L. E. Malick Mucosal surface morphology of the toad urinary bladder. Scanning electron microscope study of the natriferic and hydro-osmotic response to vasopressin 598 K. A. Fisher and K. Yanagimoto and W. Stoeckenius Oriented adsorption of purple membrane to cationic surfaces . . . . . . . . . . 611
F. D. Warner Cation-induced attachment of ciliary dynein cross-bridges . . . . . . . . . . ?? M. Osborn and R. E. Webster and K. Weber Individual microtubules viewed by immunofluorescence and electron microscopy in the same PtK2 cell . . . . ?? M. G. Farquhar Recovery of surface membrane in anterior pituitary cells. Variations in traffic detected with anionic and cationic ferritin . . . . . . . . . . . . . . . . ?? L. H. Hartwell Cell division from a genetic perspective 627 H. Ritter and S. Inoué and D. Kubai Mitosis in Barbulanympha. I. Spindle structure, formation, and kinetochore engagement . . . . . . . . . . . . . . . 638 S. Inoué and H. Ritter Mitosis in Barbulanympha. II. Dynamics of a two-stage anaphase, nuclear morphogenesis, and cytokinesis . . . . . 655 B. D. Minsky and F. J. Chlapowski Morphometric analysis of the translocation of lumenal membrane between cytoplasm and cell surface of transitional epithelial cells during the expansion-contraction cycles of mammalian urinary bladder . . . . . . . 685 R. W. Rubin and L. Goldstein and C. Ko Differences between nucleus and cytoplasm in the degree of actin polymerization . . . . . . . . . . . . . 698 D. M. Lewis and J. C. Lewis and D. A. Loegering and G. J. Gleich Localization of the guinea pig eosinophil major basic protein to the core of the granule . . . . . . . . . . 702 B. S. Eckert and E. Lazarides Localization of actin in \bionameDictyostelium amebas by immunofluorescence . . . . . . . . . . . 714 M. M. Weiser and M. M. Neumeier and A. Quaroni and K. Kirsch Synthesis of plasmalemmal glycoproteins in intestinal epithelial cells. Separation of Golgi membranes from villus and crypt cell surface membranes; glycosyltransferase activity of surface membrane . . . . . . . . . . . . . . . . 722 E. P. Reaven and G. M. Reaven Dissociation between rate of hepatic lipoprotein secretion and hepatocyte microtubule content . . . . . . . . . . 735 R. S. Tuan and W. A. Scott and Z. A. Cohn Calcium-binding protein of the chick chorioallantoic membrane. I. Immunohistochemical localization . . . . 743 R. S. Tuan and W. A. Scott and Z. A. Cohn Calcium-binding protein of the chick chorioallantoic membrane. II. Vitamin K-dependent expression . . . . . . . . . 752 D. J. Burks and P. J. Stambrook Enrichment and visualization of small replication units from cultured mammalian cells . . . . . . . . . . . . 762 D. Gospodarowicz and K. D. Brown and C. R. Birdwell and B. R. Zetter Control of proliferation of human vascular endothelial cells. Characterization of the response of human umbilical vein endothelial cells to fibroblast growth factor, epidermal growth factor, and thrombin . . . . . . 774 R. D. Berlin and J. M. Oliver Analogous ultrastructure and surface properties during capping and phagocytosis in leukocytes . . . . . . . 789 G. B. Bouck and A. Rogalski and A. Valaitis Surface organization and composition of Euglena. II. Flagellar mastigonemes . . 805 R. E. Ostlund and J. T. Leung and D. M. Kipnis Myosins of secretory tissues . . . . . . 827 P. Maupin-Szamier and T. D. Pollard Actin filament destruction by osmium tetroxide . . . . . . . . . . . . . . . 837 M. Cereijido and E. S. Robbins and W. J. Dolan and C. A. Rotunno and D. D. Sabatini Polarized monolayers formed by epithelial cells on a permeable and translucent support . . . . . . . . . . 853 S. E. Malawista and J. M. Oliver and S. A. Rudolph Microtubules and cyclic AMP in human leukocytes: on the order of things . . . 881 S. Jakovcic and H. H. Swift and N. J. Gross and M. Rabinowitz Biochemical and stereological analysis of rat liver mitochondria in different thyroid states . . . . . . . . . . . . . 887
J. M. Amabis and C. Janczur Experimental induction of gene activity in the salivary gland chromosomes of \bionameTrichosia pubescens (Diptera: Sciaridae) . . . . . . . . . . . . . . . 1 P. A. Lefebvre and S. A. Nordstrom and J. E. Moulder and J. L. Rosenbaum Flagellar elongation and shortening in Chlamydomonas. IV. Effects of flagellar detachment, regeneration, and resorption on the induction of flagellar protein synthesis . . . . . . . . . . . . . . . 8 R. W. Rubin and R. H. Warren and D. S. Lukeman and E. Clements Actin content and organization in normal and transformed cells in culture . . . . 28 R. S. Cohen and P. Siekevitz Form of the postsynaptic density. A serial section study . . . . . . . . . . 36 J. A. Weatherbee and R. B. Luftig and R. R. Weihing In vitro polymerization of microtubules from HeLa cells . . . . . . . . . . . . 47 N. B. Gilula and M. L. Epstein and W. H. Beers Cell-to-cell communication and ovulation. A study of the cumulus-oocyte complex . . . . . . . . . . . . . . . . 58 S. L. Tamm Laser microbeam study of a rotary motor in termite flagellates. Evidence that the axostyle complex generates torque 76 J. M. Starger and W. E. Brown and A. E. Goldman and R. D. Goldman Biochemical and immunological analysis of rapidly purified $ 10$-nm filaments from baby hamster kidney (BHK-21) cells 93 G. A. Scheele and G. E. Palade and A. M. Tartakoff Cell fractionation studies on the guinea pig pancreas. Redistribution of exocrine proteins during tissue homogenization 110 H. M. Blau and F. C. Kafatos Secretory kinetics in the follicular cells of silkmoths during eggshell formation . . . . . . . . . . . . . . . 131 U. Pfeifer Inhibition by insulin of the formation of autophagic vacuoles in rat liver. A morphometric approach to the kinetics of intracellular degradation by autophagy 152 C. M. Feldherr and J. Pomerantz Mechanism for the selection of nuclear polypeptides in \bionameXenopus oocytes 168 J. R. Sanes and L. M. Marshall and U. J. McMahan Reinnervation of muscle fiber basal lamina after removal of myofibers. Differentiation of regenerating axons at original synaptic sites . . . . . . . . 176 B. L. Maloff and S. P. Scordilis and C. Reynolds and H. Tedeschi Membrane potentials and resistances of giant mitochondria. Metabolic dependence and the effects of valinomycin . . . . . 199 B. L. Maloff and S. P. Scordilis and H. Tedeschi Assays of the metabolic viability of single giant mitochondria. Experiments with intact and impaled mitochondria . . 214 B. Burnside Thin (actin) and thick (myosinlike) filaments in cone contraction in the teleost retina . . . . . . . . . . . . . 227 R. H. Warren and B. Brunside Microtubules in cone myoid elongation in the teleost retina . . . . . . . . . . . 247 W. D. Cohen Observations of the marginal band system of nucleated erythrocytes . . . . . . . 260 M. M. Salpeter and A. W. Rogers and H. Kasprzak and F. A. McHenry Acetylcholinesterase in the fast extraocular muscle of the mouse by light and electron microscope autoradiography 274 R. Goodman and D. Edgar and H. Thoenen and W. Wechsler and H. Herschman Glucocorticoid induction of tyrosine hydroxylase in a continous cell line of rat pheochromocytoma . . . . . . . . . . ?? S. C. Landis Growth cones of cultured sympathetic neurons contain adrenergic vesicles . . ?? W. J. Wasserman and L. D. Smith The cyclic behavior of a cytoplasmic factor controlling nuclear membrane breakdown . . . . . . . . . . . . . . . ??
H. C. Pant and G. Shecket and H. Gainer and R. J. Lasek Neurofilament protein is phosphorylated in the squid giant axon . . . . . . . . ?? G. T. Lee and D. L. Engelhardt Fluctuations in the production of specific cellular peptides during the growth of animal cells . . . . . . . . . ?? G. A. Losa and E. R. Weibel and R. P. Bolender Integrated stereological and biochemical studies on hepatocytic membranes. III. Relative surface of endoplasmic reticulum membranes in microsomal fractions estimated on freeze-fracture preparations . . . . . . . . . . . . . . 289 K. R. Peters and G. Rutter and H. H. Gschwender and W. Haller Derivatized silica spheres as immunospecific markers for high resolution labeling in electron microscopy . . . . . . . . . . . . . . . 309 D. L. Schmucker and J. S. Mooney and A. L. Jones Stereological analysis of hepatic fine structure in the Fischer 344 rat. Influence of sublobular location and animal age . . . . . . . . . . . . . . . 319 M. S. Kannan and E. E. Daniel Formation of gap junctions by treatment in vitro with potassium conductance blockers . . . . . . . . . . . . . . . . 338 R. Wattiaux and S. Wattiaux-De Coninck and M. F. Ronveaux-dupal and F. Dubois Isolation of rat liver lysosomes by isopycnic centrifugation in a metrizamide gradient . . . . . . . . . . 349 W. W. Schlaepfer and S. Micko Chemical and structural changes of neurofilaments in transected rat sciatic nerve . . . . . . . . . . . . . . . . . 369 P. P. De Bruyn and S. Michelson and R. P. Becker Nonrandom distribution of sialic acid over the cell surface of bristle-coated endocytic vesicles of the sinusoidal endothelium cells . . . . . . . . . . . 379 A. K. Balin and D. B. Goodman and H. Rasmussen and V. J. Cristofalo Oxygen-sensitive stages of the cell cycle of human diploid cells . . . . . . 390 J. S. Hyams and G. G. Borisy Nucleation of microtubules in vitro by isolated spindle pole bodies of the yeast Saccharomyces cerevisiae . . . . . 401 D. S. Papermaster and B. G. Schneider and M. A. Zorn and J. P. Kraehenbuhl Immunocytochemical localization of a large intrinsic membrane protein to the incisures and margins of frog rod outer segment disks . . . . . . . . . . . . . 415 J. E. Goldman and H. H. Schaumburg and W. T. Norton Isolation and characterization of glial filaments from human brain . . . . . . . 426 G. L. Forrest and R. R. Klevecz Tyrosyltubulin ligase and colchicine binding activity in synchronized Chinese hamster cells . . . . . . . . . . . . . 441 R. Dute and C. Kung Ultrastructure of the proximal region of somatic cilia in Paramecium tetraurelia 451 D. J. Volsky and A. Loyter Role of Ca++ in virus-induced membrane fusion. Ca++ accumulation and ultrastructural changes induced by Sendai virus in chicken erythrocytes . . 465 M. C. Willingham and S. S. Yamada A mechanism for the destruction of pinosomes in cultured fibroblasts. Piranhalysis . . . . . . . . . . . . . . 480 U. Oron and A. Bdolah Intracellular transport of proteins in active and resting secretory cells of the venom gland of Vipera palaestinae 488 S. Matsuura and Y. Fujii-Kuriyama and Y. Tashiro Immunoelectron microscope localization of cytochrome P-450 on microsomes and other membrane structures of rat hepatocytes . . . . . . . . . . . . . . 503 K. M. Yamada Immunological characterization of a major transformation-sensitive fibroblast cell surface glycoprotein. Localization, redistribution, and role in cell shape . . . . . . . . . . . . . 520 D. T. Theodosis and J. J. Dreifuss and L. Orci A freeze-fracture study of membrane events during neurohypophysial secretion 542 A. G. Yee and J. P. Revel Loss and reappearance of gap junctions in regenerating liver . . . . . . . . . 554 G. L. Nicolson and J. R. Smith and R. Hyman Dynamics of toxin and lectin receptors on a lymphoma cell line and its toxin-resistant variant using ferritin-conjugated, 125I-labeled ligand 565 P. M. Elias and J. Goerke and D. S. Friend and B. E. Brown Freeze-fracture identification of sterol-digitonin complexes in cell and liposome membranes . . . . . . . . . . . 577 J. Metuzals and I. Tasaki Subaxolemmal filamentous network in the giant nerve fiber of the squid (\bionameLoligo pealei L.) and its possible role in excitability . . . . . 597
P. Albersheim and B. S. Valent Host-pathogen interactions in plants. Plants, when exposed to oligosaccharides of fungal origin, defend themselves by accumulating antibiotics . . . . . . . . 627 I. K. Buckley and T. R. Raju and M. Stewart Heavy meromyosin labeling of intermediate filaments in cultured connective tissue cells . . . . . . . . 644 W. W. Schlaepfer and L. A. Freeman Neurofilament proteins of rat peripheral nerve and spinal cord . . . . . . . . . 653 R. Herman and L. Weymouth and S. Penman Heterogeneous nuclear RNA-protein fibers in chromatin-depleted nuclei . . . . . . 663 P. V. Sarthy and D. M. K. Lam Biochemical studies of isolated glial (muller) cells from the turtle retina 675 R. C. Fried and M. P. Blaustein Retrieval and recycling of synaptic vesicle membrane in pinched-off nerve terminals (synaptosomes) . . . . . . . . 685 E. Crouch and G. Balian and K. Holbrook and D. Duksin and P. Bornstein Amniotic fluid fibronectin. Characterization and synthesis by cells in culture . . . . . . . . . . . . . . . 701 A. Gorio and W. P. Hurlbut and B. Ceccarelli Acetylcholine compartments in mouse diaphragm. Comparison of the effects of black widow spider venom, electrical stimulation, and high concentrations of potassium . . . . . . . . . . . . . . . 716 A. E. Grebanier and D. M. Coen and A. Rich and L. Bogorad Membrane proteins synthesized but not processed by isolated maize chloroplasts 734 L. A. Greene Nerve growth factor prevents the death and stimulates the neuronal differentiation of clonal PC12 pheochromocytoma cells in serum-free medium . . . . . . . . . . . . . . . . . 747 D. L. Hasty and E. D. Hay Freeze-fracture studies of the developing cell surface. II. Particle-free membrane blisters on glutaraldehyde-fixed corneal fibroblasts are artefacts . . . . . . . . . . . . . 756 S. Hoffstein and G. Weissmann Microfilaments and microtubules in calcium ionophore-induced secretion of lysosomal enzymes from human polymorphonuclear leukocytes . . . . . . 769 J. del Castillo and G. Escalona de Motta A new method for excitation-contraction uncoupling in frog skeletal muscle . . . 782 R. Davis and G. B. Koelle Electron microscope localization of acetylcholinesterase and butyrylcholinesterase in the superior cervical ganglion of the cat. I. Normal ganglion . . . . . . . . . . . . . . . . 785 D. J. Svoboda Unusual responses of rat hepatic and renal peroxisomes to RMI 14, 514, a new hypolipidemic agent . . . . . . . . . . 810 S. Tojo and T. Betchaku and V. J. Ziccardi and G. R. Wyatt Fat body protein granules and storage proteins in the silkmoth, Hyalophora cecropia . . . . . . . . . . . . . . . . 823 M. Reinecke and C. Walther Aspects of turnover and biogenesis of synaptic vesicles at locust neuromuscular junctions as revealed by zinc iodide-osmium tetroxide (ZIO) reacting with intravesicular SH-groups 839 S. I. Bernstein and E. A. Fyrberg and J. J. Donady Isolation and partial characterization of \bionameDrosophila myoblasts from primary cultures of embryonic cells . . 856 W. E. Hogsett and R. S. Quatrano Sulfation of fucoidin in focus embryos: III. Required for localization in the rhizoid wall . . . . . . . . . . . . . . 866 E. Rodriguez Boulan and G. Kreibich and D. D. Sabatini Spatial orientation of glycoproteins in membranes of rat liver rough microsomes. I. Localization of lectin-binding sites in microsomal membranes . . . . . . . . 874 E. Rodriguez Boulan and D. D. Sabatini and B. N. Pereyra and G. Kreibich Spatial orientation of glycoproteins in membranes of rat liver rough microsomes. II. Transmembrane disposition and characterization of glycoproteins . . . 894 P. D. Kurth and E. N. Moudrianakis and M. Bustin Histone localization in polytene chromosomes by immunofluorescence . . . 910 D. P. Verma and V. Kazazian and V. Zogbi and A. K. Bal Isolation and characterization of the membrane envelope enclosing the bacteroids in soybean root nodules . . . 919 W. R. Springer and S. H. Barondes Direct measurement of species-specific cohesion in cellular slime molds . . . . 937 R. P. Bunge and M. B. Bunge Evidence that contact with connective tissue matrix is required for normal interaction between Schwann cells and nerve fibers . . . . . . . . . . . . . . 943 H. Reggio and J. C. Dagorn Ionic interactions between bovine chymotrypsinogen A and chondroitin sulfate A.B.C.. A possible model for molecular aggregation in zymogen granules . . . . . . . . . . . . . . . . 951 L. M. Griffith and T. D. Pollard Evidence for actin filament-microtubule interaction mediated by microtubule-associated proteins . . . . 958
M. Nakamura and L. J. Romrell and P. F. Hall The effects of temperature and glucose on protein biosynthesis by immature (round) spermatids from rat testes . . . 1 B. Baumgartner and K. T. Tokuyasu and M. J. Chrispeels Localization of vicilin peptidohydrolase in the cotyledons of mung bean seedlings by immunofluorescence microscopy . . . . 10 S. B. Kater and N. J. Galvin Physiological and morphological evidence for coupling in mouse salivary gland acinar cells . . . . . . . . . . . . . . 20 N. Simionescu and M. Simionescu and G. E. Palade Open junctions in the endothelium of the postcapillary venules of the diaphragm 27 L. G. Paavola The corpus luteum of the guinea pig. II. Cytochemical studies on the Golgi complex, GERL, and lysosomes in luteal cells during maximal progesterone secretion . . . . . . . . . . . . . . . 45 L. G. Paavola The corpus luteum of the guinea pig. III. Cytochemical studies on the Golgi complex and GERL during normal postpartum regression of luteal cells, emphasizing the origin of lysosomes and autophagic vacuoles . . . . . . . . . . 59 C. L. Forest and D. A. Goodenough and U. W. Goodenough Flagellar membrane agglutination and sexual signaling in the conditional GAM-1 mutant of Chlamydomonas . . . . . 74 G. T. Lee and D. L. Engelhardt Growth-related fluctuation in messenger RNA utilization in animal cells . . . . 85 M. M. Sanders Fractionation of nucleosomes by salt elution from micrococcal nuclease-digested nuclei . . . . . . . . 97 M. F. Walter and P. Satir Calcium control of ciliary arrest in mussel gill cells . . . . . . . . . . . 110 E. Wakshull and M. I. Johnson and H. Burton Persistence of an amine uptake system in cultured rat sympathetic neurons which use acetylcholine as their transmitter 121 G. Mintz and L. Glaser Specific glycoprotein changes during development of the chick neural retina 132 M. Estridge and R. Bunge Compositional analysis of growing axons from rat sympathetic neurons . . . . . . 138 J. Meldolesi and G. Castiglioni and R. Parma and N. Nassivera and P. De Camilli Ca++-dependent disassembly and reassembly of occluding junctions in guinea pig pancreatic acinar cells. Effect of drugs . . . . . . . . . . . . 156 P. T. Kelly and C. W. Cotman Synaptic proteins. Characterization of tubulin and actin and identification of a distinct postsynaptic density polypeptide . . . . . . . . . . . . . . 173 L. L. Chen and A. M. Frank and J. C. Adams and R. M. Steinman Distribution of horseradish peroxidase (HRP)--anti-HRP immune complexes in mouse spleen with special reference to follicular dendritic cells . . . . . . . 184 J. P. Bourgeois and J. L. Popot and A. Ryter and J. P. Changeux Quantitative studies on the localization of the cholinergic receptor protein in the normal and denervated electroplaque from Electrophorus electricus . . . . . 200 P. J. Oates and O. Touster In vitro fusion of Acanthamoeba phagolysosomes. II Quantitative characterization of in vitro vacuole fusion by improved electron microscope and new light microscope techniques . . 217 S. de Petris Nonuniform distribution of concanavalin--A receptors and surface antigens on uropod-forming thymocytes 235 N. Rubinstein and K. Mabuchi and F. Pepe and S. Salmons and J. Gergely and F. Sreter Use of type-specific antimyosins to demonstrate the transformation of individual fibers in chronically stimulated rabbit fast muscles . . . . . 252 E. Pearlstein and S. R. Dienstman and V. Defendi Identification of macrophage external membrane proteins and their possible role in cell adhesion . . . . . . . . . 263 K. Fujiwara and M. E. Porter and T. D. Pollard Alpha-actinin localization in the cleavage furrow during cytokinesis . . . 268 U. B. Sleytr and P. Messner Freeze-fracturing in normal vacuum reveals ringlike yeast plasmalemma structures . . . . . . . . . . . . . . . 276 W. S. Adair and D. Jurivich and U. W. Goodenough Localization of cellular antigens in sodium dodecyl sulfate-polyacrylamide gels . . . . . . . . . . . . . . . . . . 281
J. Remacle Binding of cytochrome b5 to membranes of isolated subcellular organelles from rat liver . . . . . . . . . . . . . . . . . 291 A. Schaffner and R. Rodewald Glomerular permeability in the bullfrog Rana catesbeiana . . . . . . . . . . . . 314 D. L. Fouts and D. R. Wolstenholme and H. W. Boyer Heterogeneity in sensitivity to cleavage by the restriction endonucleases ECORI and HindIII of circular kinetoplast DNA molecules of Crithidia acanthocephali 329 W. Dessau and J. Sasse and R. Timpl and F. Jilek and K. von der Mark Synthesis and extracellular deposition of fibronectin in chondrocyte cultures. Response to the removal of extracellular cartilage matrix . . . . . . . . . . . . 342 C. L. Marcelo and Y. G. Kim and J. L. Kaine and J. J. Voorhees Stratification, specialization, and proliferation of primary keratinocyte cultures. Evidence of a functioning in vitro epidermal cell system . . . . . . 356 U. Rutishauser and J. P. Thiery and R. Brackenbury and G. M. Edelman Adhesion among neural cells of the chick embryo. III. Relationship of the surface molecule CAM to cell adhesion and the development of histotypic patterns . . . 371 U. Rutishauser and W. E. Gall and G. M. Edelman Adhesion among neural cells of the chick embryo. IV. Role of the cell surface molecule CAM in the formation of neurite bundles in cultures of spinal ganglia 382 D. Lawson and C. Fewtrell and M. C. Raff Localized mast cell degranulation induced by concanavalin A-sepharose beads. Implications for the Ca$^{2+}$ hypothesis of stimulus-secretion coupling . . . . . . . . . . . . . . . . 394 F. R. Frankel and R. W. Tucker and J. Bruce and R. Stenberg Fibroblasts and macrophages of mice with the Chediak--Higashi-like syndrome have microtubules and actin cables . . . . . 401 J. Braun and K. Fujiwara and T. D. Pollard and E. R. Unanue Two distinct mechanisms for redistribution of lymphocyte surface macromolecules. I. Relationship to cytoplasmic myosin . . . . . . . . . . . 409 J. Braun and K. Fujiwara and T. D. Pollard and E. R. Unanue Two distinct mechanisms for redistribution of lymphocyte surface macromolecules. II. Contrasting effects of local anesthetics and a calcium ionophore . . . . . . . . . . . . . . . 419 P. Drochmans and C. Freudenstein and J. C. Wanson and L. Laurent and T. W. Keenan and J. Stadler and R. Leloup and W. W. Franke Structure and biochemical composition of desmosomes and tonofilaments isolated from calf muzzle epidermis . . . . . . . 427 M. S. Mooseker and T. D. Pollard Characterization and localization of myosin in the brush border of intestinal epithelial cells . . . . . . . . . . . . 444 H. Sugi and S. Suzuki Ultrastructural and physiological studies on the longitudinal body wall muscle of Dolabella auricularia. I. Mechanical response and ultrastructure 454 S. Suzuki and H. Sugi Ultrastructural and physiological studies on the longitudinal body wall muscle of Dolabella auricularia. II. Localization of intracellular calcium and its translocation during mechanical activity . . . . . . . . . . . . . . . . 467 F. Wunderlich and G. Giese and C. Bucherer Expansion and apparent fluidity decrease of nuclear membranes induced by low Ca/Mg. Modulation of nuclear membrane lipid fluidity by the membrane-associated nuclear matrix proteins? . . . . . . . . . . . . . . . 479 F. Gremo and D. Kobiler and S. H. Barondes Distribution of an endogenous lectin in the developing chick optic tectum . . . 491 L. I. Binder and J. L. Rosenbaum The in vitro assembly of flagellar outer doublet tubulin . . . . . . . . . . . . 500 Y. Nishi and Y. Takesue Localization of intestinal sucrase-isomaltase complex on the microvillous membrane by electron microscopy using nonlabeled antibodies 516 J. A. Connolly and V. I. Kalnins Visualization of centrioles and basal bodies by fluorescent staining with nonimmune rabbit sera . . . . . . . . . 526 N. Iwatsuki and O. H. Petersen Electrical coupling and uncoupling of exocrine acinar cells . . . . . . . . . 533 L. Gerace and A. Blum and G. Blobel Immunocytochemical localization of the major polypeptides of the nuclear pore complex-lamina fraction. Interphase and mitotic distribution . . . . . . . . . . 546 V. R. Lingappa and D. Shields and S. L. Woo and G. Blobel Nascent chicken ovalbumin contains the functional equivalent of a signal sequence . . . . . . . . . . . . . . . . 567 W. Z. Cande and S. M. Wolniak Chromosome movement in lysed mitotic cells is inhibited by vanadate . . . . . 573 K. E. Howell and A. Ito and G. E. Palade Endoplasmic reticulum marker enzymes in Golgi fractions--what does this mean? 581 A. Ito and G. E. Palade Presence of nadph-cytochrome P-450 reductase in rat liver Golgi membranes: Evidence obtained by immunoadsorption method . . . . . . . . . . . . . . . . . 590
A. Saito and C. T. Wang and S. Fleischer Membrane asymmetry and enhanced ultrastructural detail of sarcoplasmic reticulum revealed with use of tannic acid . . . . . . . . . . . . . . . . . . 601 P. Stanley and J. P. Carver Binding of [125I] wheat germ agglutinin to Chinese hamster ovary cells under conditions which affect the mobility of membrane components . . . . . . . . . . 617 T. W. James and C. Jope Visualization by fluorescence of chloroplast DNA in higher plants by means of the DNA-specific probe 4'6-diamidino-$2$-phenylindole . . . . . 623 C. A. Jope and A. Hirai and S. G. Wildman Evidence that the amount of chloroplast DNA exceeds that of nuclear DNA in mature leaves . . . . . . . . . . . . . 631 R. K. H. Liem and S. Yen and G. D. Salomon and M. L. Shelanski Intermediate filaments in nervous tissues . . . . . . . . . . . . . . . . 637 H. Gross and O. Kuebler and E. Bas and H. Moor Decoration of specific sites on freeze-fractured membranes . . . . . . . 646 C. L. Wey and P. L. Ahl and R. A. Cone Bacteriorhodopsin induces a light-scattering change in Halobacterium halobium . . . . . . . . . . . . . . . . 657 P. F. Davies and R. Ross Mediation of pinocytosis in cultured arterial smooth muscle and endothelial cells by platelet-derived growth factor 663 R. I. Schwarz and D. A. Farson and W. J. Soo and M. J. Bissell Primary avian tendon cells in culture. An improved system for understanding malignant transformation . . . . . . . . 672 U. W. Goodenough and D. Jurivich Tipping and mating-structure activation induced in Chlamydomonas gametes by flagellar membrane antisera . . . . . . 680 A. Tartakoff and P. Vassalli and M. Détraz Comparative studies of intracellular transport of secretory proteins . . . . 694 E. Wang and R. D. Goldman Functions of cytoplasmic fibers in intracellular movements in BHK-21 cells 708 D. L. Nanney and S. S. Chen and E. B. Meyer Scalar constraints in Tetrahymena evolution. Quantitative basal body variations within and between species 727 D. H. Tippit and D. Schulz and J. D. Pickett-Heaps Analysis of the distribution of spindle microtubules in the diatom Fragilaria 737 R. B. Hanna and J. S. Keeter and G. D. Pappas The fine structure of a rectifying electrotonic synapse . . . . . . . . . . 764 N. S. McNutt A thin-section and freeze-fracture study of microfilament-membrane attachments in choroid plexus and intestinal microvilli 774 L. A. Culp and B. J. Rollins and J. Buniel and S. Hitri Two functionally distinct pools of glycosaminoglycan in the substrate adhesion site of murine cells . . . . . 788 S. F. Schaeffer and E. Raviola Membrane recycling in the cone cell endings of the turtle retina . . . . . . 802 S. M. Penningroth and G. B. Witman Effects of adenylyl imidodiphosphate, a nonhydrolyzable adenosine triphosphate analog, on reactivated and rigor wave sea urchin sperm . . . . . . . . . . . . 827 C. Milcarek and K. Zahn The synthesis of ninety proteins including actin throughout the HeLa cell cycle . . . . . . . . . . . . . . . . . 833 A. Bretscher and K. Weber Localization of actin and microfilament-associated proteins in the microvilli and terminal web of the intestinal brush border by immunofluorescence microscopy . . . . . 839 D. A. Begg and R. Rodewald and L. I. Rebhun The visualization of actin filament polarity in thin sections. Evidence for the uniform polarity of membrane-associated filaments . . . . . 846
C. L. Rieder Ribonucleoprotein staining of centrioles and kinetochores in newt lung cell spindles . . . . . . . . . . . . . . . . 1 T. Uchida and J. Kim and M. Yamaizumi and Y. Miyake and Y. Okada Reconstitution of lipid vesicles associated with HVJ (Sendai virus) sikes. Purification and some properties of vesicles containing nontoxic fragment A of diphtheria toxin . . . . . . . . . 10 T. S. Lawrence and R. D. Ginzberg and N. B. Gilula and W. H. Beers Hormonally induced cell shape changes in cultured rat ovarian granulosa cells . . 21 E. D. Jarasch and J. Kartenbeck and G. Bruder and A. Fink and D. J. Morré and W. W. Franke B-type cytochromes in plasma membranes isolated from rat liver, in comparison with those of endomembranes . . . . . . 37 G. Albrecht-Buehler The angular distribution of directional changes of guided 3T3 cells . . . . . . 53 S. F. Goldstein Starting transients in sea urchin sperm flagella . . . . . . . . . . . . . . . . 61 M. Maylie-Pfenninger and J. D. Jamieson Distribution of cell surface saccharides on pancreatic cells . . . . . . . . . . 69 M. F. Maylié-Pfenninger and J. D. Jamieson Distribution of cell surface saccharides on pancreatic cells. II. Lectin-labeling patterns on mature guinea pig and rat pancreatic cells . . . . . . . . . . . . 77 C. Sardet and M. Pisam and J. Maetz The surface epithelium of teleostean fish gills. Cellular and junctional adaptations of the chloride cell in relation to salt adaptation . . . . . . 96 P. Laurila and J. Wartiovaara and S. Stenman Fibronectin expression is determined by the genotype of the transformed parental cells in heterokaryons between normal and transformed fibroblasts . . . . . . 118 P. C. Letourneau Inhibition of intercellular adhesion by concanavalin A is associated with concanavalin A-mediated redistribution of surface receptors . . . . . . . . . . 128 S. L. Tamm Membrane movements and fluidity during rotational motility of a termite flagellate. A freeze-fracture study . . 141 M. L. Ledbetter and M. Lubin Transfer of potassium. A new measure of cell--cell coupling . . . . . . . . . . 150 B. D. Hubbard and E. Lazarides Copurification of actin and desmin from chicken smooth muscle and their copolymerization in vitro to intermediate filaments . . . . . . . . . 166 M. A. Goldstein and M. L. Entman Microtubules in mammalian heart muscle 183 J. C. Murray and G. Stingl and H. K. Kleinman and G. R. Martin and S. I. Katz Epidermal cells adhere preferentially to type IV (basement membrane) collagen . . 197 S. W. Craig and J. V. Pardo alpha-Actinin localization in the junctional complex of intestinal epithelial cells . . . . . . . . . . . . 203 J. F. Head and S. Mader and B. Kaminer Calcium-binding modulator protein from the unfertilized egg of the sea urchin Arbacia punctulata . . . . . . . . . . . 211 S. Bonatti and R. Cancedda and G. Blobel Membrane biogenesis. In vitro cleavage, core glycosylation, and integration into microsomal membranes of sindbis virus glycoproteins . . . . . . . . . . . . . 219
A. Eriksson and L. E. Thornell Intermediate (skeletin) filaments in heart Purkinje fibers. A correlative morphological and biochemical identification with evidence of a cytoskeletal function . . . . . . . . . 231 A. Quaroni and J. Wands and R. L. Trelstad and K. J. Isselbacher Epithelioid cell cultures from rat small intestine. Characterization by morphologic and immunologic criteria . . 248 H. Kim and L. I. Binder and J. L. Rosenbaum The periodic association of MAP2 with brain microtubules in vitro . . . . . . 266 N. Angelier and D. Hemon and M. Bouteille Mechanisms of transcription in nucleoli of amphibian oocytes as visualized by high-resolution autoradiography . . . . 277 P. N. Devreotes and P. L. Derstine and T. L. Steck Cyclic 3',5' AMP relay in \bionameDictyostelium discoideum. I. A technique to monitor responses to controlled stimuli . . . . . . . . . . . 291 P. N. Devreotes and T. L. Steck Cyclic 3',5' AMP relay in \bionameDictyostelium discoideum. II. Requirements for the initiation and termination of the response . . . . . . 300 C. B. Basbaum and J. E. Heuser Morphological studies of stimulated adrenergic axon varicosities in the mouse vas deferens . . . . . . . . . . . 310 J. S. Tkacz and V. L. MacKay Sexual conjugation in yeast. Cell surface changes in response to the action of mating hormones . . . . . . . 326 B. Baccetti and A. G. Burrini and R. Dallai and V. Pallini The dynein electrophoretic bands in axonemes naturally lacking the inner or the outer arm . . . . . . . . . . . . . 334 E. R. Kuczmarski and J. L. Rosenbaum Chick brain actin and myosin. Isolation and characterization . . . . . . . . . . 341 E. R. Kuczmarski and J. L. Rosenbaum Studies on the organization and localization of actin and myosin in neurons . . . . . . . . . . . . . . . . 356 A. O. Jorgensen and V. Kalnins and D. H. MacLennan Localization of sarcoplasmic reticulum proteins in rat skeletal muscle by immunofluorescence . . . . . . . . . . . 372 D. E. Wylie and C. H. Damsky and C. A. Buck Studies on the function of cell surface glycoproteins. I. Use of antisera to surface membranes in the identification of membrane components relevant to cell-substrate adhesion . . . . . . . . 385 C. H. Damsky and D. E. Wylie and C. A. Buck Studies on the function of cell surface glycoproteins. II. Possible role of surface glycoproteins in the control of cytoskeletal organization and surface morphology . . . . . . . . . . . . . . . 403 F. N. Katz and H. F. Lodish Transmembrane biogenesis of the vesicular stomatitis virus glycoprotein 416 J. J. Bergeron and R. Sikstrom and A. R. Hand and B. I. Posner Binding and uptake of 125I-insulin into rat liver hepatocytes and endothelium. An in vivo radioautographic study . . . 427 I. L. Cameron and N. K. Smith and T. B. Pool Element concentration changes in mitotically active and postmitotic enterocytes. An X-ray microanalysis study . . . . . . . . . . . . . . . . . 444 S. I. Matsui and H. Weinfeld and A. A. Sandberg Quantitative conservation of chromatin-bound RNA polymerases I and II in mitosis. Implications for chromosome structure . . . . . . . . . . . . . . . 451 M. Ishiura and Y. Okada The role of actin in temperature-dependent gel-sol transformation of extracts of Ehrlich ascites tumor cells . . . . . . . . . . 465 K. T. Tokuyasu and R. Schekman and S. J. Singer Domains of receptor mobility and endocytosis in the membranes of neonatal human erythrocytes in the membranes of neonatal human erythrocytes and reticulocytes are deficient in spectrin 481 S. Zweig and S. J. Singer Concanavalin A-induced endocytosis in rabbit reticulocytes, and its decrease with reticulocyte maturation . . . . . . 487 K. M. Yamada and D. W. Kennedy Fibroblast cellular and plasma fibronectins are similar but not identical . . . . . . . . . . . . . . . 492 S. S. Brown and J. A. Spudich Nucleation of polar actin filament assembly by a positively charged surface 499
I. M. Herman and T. D. Pollard Comparison of purified anti-actin and fluorescent-heavy meromyosin staining patterns in dividing cells . . . . . . . 509 G. M. Langford and S. Inoué Motility of the microtubular axostyle in Pyrsonympha . . . . . . . . . . . . . . 521 M. J. McLean and A. Pelleg and N. Sperelakis Electrophysiological recordings from spontaneously contracting reaggregates of cultured smooth muscle cells from guinea pig vas deferens . . . . . . . . 539 G. Wiche and L. S. Honig and R. D. Cole Microtubule protein preparations from C6 glial cells and their spontaneous polymer formation . . . . . . . . . . . 553 J. T. O'Flaherty and D. L. Kreutzer and H. J. Showell and G. Vitkauskas and E. L. Becker and P. A. Ward Selective neutrophil desensitization to chemotactic factors . . . . . . . . . . 564 N. C. Zanetti and D. R. Mitchell and F. D. Warner Effects of divalent cations on dynein cross bridging and ciliary microtubule sliding . . . . . . . . . . . . . . . . 573 J. C. Osborn and C. J. Duncan and J. L. Smith Role of calcium ions in the control of embryogenesis of \bionameXenopus. Changes in the subcellular distribution of calcium in early cleavage embryos after treatment with the ionophore A23187 . . . . . . . . . . . . . . . . . 589 T. C. Rodman and S. D. Litwin and M. Romani and G. Vidali Life history of mouse sperm protein. Intratesticular stages . . . . . . . . . 605 M. Parvinen and L. M. Parvinen Active movements of the chromatoid body. A possible transport mechanism for haploid gene products . . . . . . . . . 621 H. Jockusch and B. M. Jockusch and M. M. Burger Nerve fibers in culture and their interactions with non-neural cells visualized by immunofluorescence . . . . 629 E. R. Jakoi and R. B. Marchase Ligatin from embryonic chick neural retina . . . . . . . . . . . . . . . . . 642 D. H. Farb and D. K. Berg and G. D. Fischbach Uptake and release of [3H]gamma-aminobutyric acid by embryonic spinal cord neurons in dissociated cell culture . . . . . . . . . . . . . . . . 651 B. van Deurs and J. K. Koehler Tight junctions in the choroid plexus epithelium. A freeze-fracture study including complementary replicas . . . . 662 G. Sluder Role of spindle microtubules in the control of cell cycle timing . . . . . . 674 J. W. Slot and J. J. Geuze A morphometrical study of the exocrine pancreatic cell in fasted and fed frogs 692 J. W. Slot and G. J. Strous and J. J. Geuze Effect of fasting and feeding on synthesis and intracellular transport of proteins in the frog exocrine pancreas 708 J. F. Habener and M. Amherdt and M. Ravazzola and L. Orci Parathyroid hormone biosynthesis. Correlation of conversion of biosynthetic precursors with intracellular protein migration as determined by electron microscope autoradiography . . . . . . . . . . . . 715 J. W. McGowan and B. Borwein and J. A. Medeiros and T. Beveridge and J. D. Brown and E. Spiller and R. Feder and J. Topalian and W. Gudat High resolution microchemical analysis using soft X-ray lithographic techniques 732 S. S. Jahromi and M. P. Charlton Transverse sarcomere splitting. A possible means of longitudinal growth in crab muscles . . . . . . . . . . . . . . 736 A. V. Somlyo Bridging structures spanning the junctioning gap at the triad of skeletal muscle . . . . . . . . . . . . . . . . . 743 J. Condeelis Isolation of concanavalin a caps during various stages of formation and their association with actin and myosin . . . 751 R. D. Goldman and B. Chojnacki and M. J. Yerna Ultrastructure of microfilament bundles in baby hamster kidney (BHK-21) cells. The use of tannic acid . . . . . . . . . 759 J. R. Warner Distribution of newly formed ribosomal proteins in HeLa cell fractions . . . . 767 K. Zaar Visualization of pores (export sites) correlated with cellulose production in the envelope of the gram-negative bacterium Acetobacter xylinum . . . . . 773 B. J. Benecke and S. Penman Large species differences in the pattern of snPI RNA which can distinguish ape from human . . . . . . . . . . . . . . . 778 M. H. Teng and D. B. Rifkin Fibronectin from chicken embryo fibroblasts contains covalently bound phosphate . . . . . . . . . . . . . . . 784
D. K. Biswas and K. T. Abdullah and B. A. Brennessel On the mechanism of $5$-bromodeoxyuridine induction of prolactin synthesis in rat pituitary tumor cells . . . . . . . . . . . . . . 1 G. F. Gauthier and S. Lowey Distribution of myosin isoenzymes among skeletal muscle fiber types . . . . . . 10 J. H. Eichhorn and B. Peterkofsky Local anesthetic-induced inhibition of collagen secretion in cultured cells under conditions where microtubules are not depolymerized by these agents . . . 26 N. Hirokawa and M. Kitamura Binding of Clostridium botulinum neurotoxin to the presynaptic membrane in the central nervous system . . . . . 43 G. Nivaler and E. A. Zimmerman and R. Defendini and A. S. Liotta and D. T. Kreiger and M. J. Brownstein Andrenocorticotropin and $ \beta $-lipotropin in the hypothalamus . . . . 50 T. Obinata and Y. Shimada and R. Matsuda Troponin in embryonic chick skeletal muscle cells in vitro. An immunoelectron microscope study . . . . . . . . . . . . 59 B. E. Hull and L. A. Staehelin The terminal web. A reevaluation of its structure and function . . . . . . . . . 67 K. Hedman and M. Kurkinen and K. Alitalo and A. Vaheri and S. Johansson and M. Höök Isolation of the pericellular matrix of human fibroblast cultures . . . . . . . 83 G. L. Decker and W. J. Lennarz Sperm binding and fertilization envelope formation in a cell surface complex isolated from sea urchin eggs . . . . . 92 R. C. Burghardt and E. Anderson Hormonal modulation of ovarian interstitial cells with particular reference to gap junctions . . . . . . . 104 R. B. Young and W. G. Bergen and P. B. Blauwiekel Myosin synthesis in embryonic chicken fibroblasts . . . . . . . . . . . . . . 115 N. Agabian and M. Evinger and G. Parker Generation of asymmetry during development. Segregation of type-specific proteins in Caulobacter 123 Y. S. Kanwar and M. G. Farquhar Anionic sites in the glomerular basement membrane. In vivo and in vitro localization to the laminae rarae by cationic probes . . . . . . . . . . . . 137 D. F. Wirth and H. F. Lodish and P. W. Robbins Requirements for the insertion of the Sindbis envelope glycoproteins into the endoplasmic reticulum membrane . . . . . 154 B. Ceccarelli and F. Grohovaz and W. P. Hurlbut Freeze-fracture studies of frog neuromuscular junctions during intense release of neurotransmitter. I. Effects of black widow spider venom and Ca$^{2+}$-free solutions on the structure of the active zone . . . . . . 163 B. Ceccarelli and F. Grohovaz and W. P. Hurlbut Freeze-fracture studies of frog neuromuscular junctions during intense release of neurotransmitter. II. Effects of electrical stimulation and high potassium . . . . . . . . . . . . . . . 178 M. Friedlander and D. A. Fischman Immunological studies of the embryonic muscle cell surface. Antiserum to the prefusion myoblast . . . . . . . . . . . 193 L. D. Andrews and A. I. Cohen Freeze-fracture evidence for the presence of cholesterol in particle-free patches of basal disks and the plasma membrane of retinal rod outer segments of mice and frogs . . . . . . . . . . . 215 L. G. Tilney and J. G. Clain and M. S. Tilney Membrane events in the acrosomal reaction of Limulus sperm. Membrane fusion, filament-membrane particle attachment, and the source and formation of new membrane surface . . . . . . . . 229 A. B. Blumenthal and J. D. Dieden and L. N. Kapp and J. W. Sedat Rapid isolation of metaphase chromosomes containing high molecular weight DNA . . 255 A. L. Olins and D. E. Olins Stereo electron microscopy of the $ 25$-nm chromatin fibers in isolated nuclei . . . . . . . . . . . . . . . . . 260 M. P. Sheetz DNase-I-dependent dissociation of erythrocyte cytoskeletons . . . . . . . 266
J. E. Heuser and T. S. Reese and M. J. Dennis and Y. Jan and L. Jan and L. Evans Synaptic vesicle exocytosis captured by quick freezing and correlated with quantal transmitter release . . . . . . 275 B. Crawford Cloned pigmented retinal epiehtlium. The role of microfilaments in the differentiation of cell shape . . . . . 301 A. P. Somlyo and A. V. Somlyo and H. Shuman Electron probe analysis of vascular smooth muscle. Composition of mitochondria, nuclei, and cytoplasm . . 316 D. L. Gard and E. Lazarides Specific fluorescent labeling of chicken myofibril Z-line proteins catalyzed by guinea pig liver transglutaminase . . . 336 S. C. Selden and S. M. Schwartz Cytochalasin B inhibition of endothelial proliferation at wound edges in vitro 348 T. Miki-Noumura and R. Kamiya Conformational change in the outer doublet microtubules from sea urchin sperm flagella . . . . . . . . . . . . . 355 B. Ashby and C. Frieden and R. Bischoff Immunofluorescent and histochemical localization of AMP deaminase in skeletal muscle . . . . . . . . . . . . 361 H. G. Hansma Sodium uptake and membrane excitation in Paramecium . . . . . . . . . . . . . . . 374 H. T. Haigler and J. A. McKanna and S. Cohen Direct visualization of the binding and internalization of a ferritin conjugate of epidermal growth factor in human carcinoma cells A-431 . . . . . . . . . 382 D. L. Tyrrell and A. Ehrnst Transmembrane communication in cells chronically infected with measles virus 396 J. F. Mayer and B. R. Zirkin Spermatogenesis in the mouse. I. Autoradiographic studies of nuclear incorporation and loss of 3H-amino acids 403 N. Kalderon and N. B. Gilula Membrane events involved in myoblast fusion . . . . . . . . . . . . . . . . . 411 A. Piasek and J. Thyberg Effects of colchicine on endocytosis and cellular inactivation of horseradish peroxidase in cultured chondrocytes . . 426 J. B. Wade and R. G. O'Neil and J. L. Pryor and E. L. Boulpaep Modulation of cell membrane area in renal collecting tubules by corticosteroid hormones . . . . . . . . 439 A. Darszon and C. A. Vandenberg and M. H. Ellisman and M. Montal Incorporation of membrane proteins into large single bilayer vesicles. Application to rhodopsin . . . . . . . . 446 J. B. Rattner and B. A. Hamkalo Nucleosome packing in interphase chromatin . . . . . . . . . . . . . . . 453
N. H. Chua and G. W. Schmidt Transport of proteins into mitochondria and chloroplasts . . . . . . . . . . . . 461 B. R. Telzer and J. L. Rosenbaum Cell cycle-dependent, in vitro assembly of microtubules onto pericentriolar material of HeLa cells . . . . . . . . . 484 H. Sakiyama and H. Otsu and S. Kanegasaki Cellular interaction between fixed and living cells. Transfer of radioactive materials from living cells to fixed cells . . . . . . . . . . . . . . . . . 498 Y. Fujii-Kuriyama and M. Negishi and R. Mikawa and Y. Tashiro Biosynthesis of cytochrome P-450 on membrane-bound ribosomes and its subsequent incorporation into rough and smooth microsomes in rat hepatocytes . . 510 C. A. Poodry and L. Edgar Reversible alteration in the neuromuscular junctions of \bionameDrosophila melanogaster bearing a temperature-sensitive mutation, shibire . . . . . . . . . . . . . . . . 520 E. B. Briles and W. Gregory and P. Fletcher and S. Kornfeld Vertebrate lectins, Comparison of properties of beta-galactoside-binding lectins from tissues of calf and chicken 528 B. J. Hazelton and J. T. Tupper Calcium transport and exchange in mouse 3T3 and SV40-3T3 cells . . . . . . . . . 538 K. C. Joseph and A. Stieber and N. K. Gonatas Endocytosis of cholera toxin in GERL-like structures of murine neuroblastoma cells pretreated with GM1 ganglioside. Cholera toxin internalization into Neuroblastoma GERL 543 S. Carbonetto and D. M. Fambrough Synthesis, insertion into the plasma membrane, and turnover of alpha-bungarotoxin receptors in chick sympathetic neurons . . . . . . . . . . 555 W. W. Franke and E. Schmid and M. Osborn and K. Weber Intermediate-sized filaments of human endothelial cells . . . . . . . . . . . 570 M. Willard and M. Wiseman and J. Levine and P. Skene Axonal transport of actin in rabbit retinal ganglion cells . . . . . . . . . 581 M. Prentki and C. Chaponnier and B. Jeanrenaud and G. Gabbiani Actin microfilaments, cell shape, and secretory processes in isolated rat hepatocytes. Effect of phalloidin and cytochalasin D . . . . . . . . . . . . . 592 L. G. Tilney and N. Kallenbach Polymerization of actin. VI. The polarity of the actin filaments in the acrosomal process and how it might be determined . . . . . . . . . . . . . . . 608 M. J. Welsh and J. R. Dedman and B. R. Brinkley and A. R. Means Tubulin and calmodulin. Effects of microtubule and microfilament inhibitors on localization in the mitotic apparatus 624 M. J. Rindler and L. M. Chuman and L. Shaffer and M. H. Saier Retention of differentiated properties in an established dog kidney epithelial cell line (MDCK) . . . . . . . . . . . . 635 R. J. Pietras and C. M. Szego Estrogen-induced membrane alterations and growth associated with proteinase activity in endometrial cells . . . . . 649 J. M. Caron and R. D. Berlin Interaction of microtubule proteins with phospholipid vesicles . . . . . . . . . 665 Y. L. Wang and D. L. Taylor Distribution of fluorescently labeled actin in living sea urchin eggs during early development . . . . . . . . . . . 672 E. Berger and G. Cox A precursor of cytoplasmic actin in cultured \bionameDrosophila cells . . . 680 W. T. Chen Induction of spreading during fibroblast movement . . . . . . . . . . . . . . . . 684 B. R. Jasny and I. Tamm Temporal organization of replication in DNA fibers of mammalian cells . . . . . 692 M. P. Kurek and D. Billig and P. Stambrook Size classes of replication units in DNA from sea urchin embryos . . . . . . . . 698
P. Kahn and S. I. Shin Cellular tumorigenicity in nude mice. Test of associations among loss of cell-surface fibronectin, anchorage independence, and tumor-forming ability 1 A. M. Lambowitz and R. J. LaPolla and R. A. Collins Mitochondrial ribosome assembly in Neurospora. Two-dimensional gel electrophoretic analysis of mitochondrial ribosomal proteins . . . . 17 M. Willinger and F. R. Frankel Fate of surface proteins of rabbit polymorphonuclear leukocytes during phagocytosis. I. Identification of surface proteins . . . . . . . . . . . . 32 M. Willinger and N. Gonatas and F. R. Frankel Fate of surface proteins of rabbit polymorphonuclear leukocytes during phagocytosis. II. Internalization of proteins . . . . . . . . . . . . . . . . 45 R. L. Meeusen and W. Z. Cande N-ethylmaleimide-modified heavy meromyosin. A probe for actomyosin interactions . . . . . . . . . . . . . . 57 K. M. Baldwin Cardiac gap junction configuration after an uncoupling treatment as a function of time . . . . . . . . . . . . . . . . . . 66 S. L. Wolin and R. S. Kucherlapati Expression of microtubule networks in normal cells, transformed cells, and their hybrids . . . . . . . . . . . . . 76 S. J. Horovitch and R. V. Storti and A. Rich and M. L. Pardue Multiple actins in \bionameDrosophila melanogaster . . . . . . . . . . . . . . 86 J. J. Morrissey and D. V. Cohn Regulation of secretion of parathormone and secretory protein--I from separate intracellular pools by calcium, dibutyryl cyclic AMP, and (1)-isoproterenol . . . . . . . . . . . 93 R. W. Rubin and R. H. Warren Organization of tubulin in normal and transformed rat kidney cells . . . . . . 103 J. J. Wolosewick and K. R. Porter Microtrabecular lattice of the cytoplasmic ground substance. Artifact or reality . . . . . . . . . . . . . . . 114 D. A. Kirschner and C. J. Hollingshead and C. Thaxton and D. L. Caspar and D. A. Goodenough Structural states of myelin observed by X-ray diffraction and freeze-fracture electron microscopy . . . . . . . . . . 140 J. E. Heuser and S. R. Salpeter Organization of acetylcholine receptors in quick-frozen, deep-etched, and rotary-replicated Torpedo postsynaptic membrane . . . . . . . . . . . . . . . . 150 H. Mori and Y. Komiya and M. Kurokawa Slowly migrating axonal polypeptides. Inequalities in their rate and amount of transport between two branches of bifurcating axons . . . . . . . . . . . 174 M. E. Pereira and E. A. Kabat A versatile immunoadsorbent capable of binding lectins of various specificities and its use for the separation of cell populations . . . . . . . . . . . . . . 185 M. Jacob and T. L. Lentz Localization of acetylcholine receptors by means of horseradish peroxidase-alpha-bungarotoxin during formation and development of the neuromuscular junction in the chick embryo . . . . . . . . . . . . . . . . . 195 A. Spudich and J. A. Spudich Actin in triton-treated cortical preparations of unfertilized and fertilized sea urchin eggs . . . . . . . 212 L. F. Lemanski Role of tropomyosin in actin filament formation in embryonic salamander heart cells . . . . . . . . . . . . . . . . . 227 G. Gabella and D. Blundell Nexuses between the smooth muscle cells of the guinea-pig ileum . . . . . . . . 239 G. F. Riou and J. M. Saucier Characterization of the molecular components in kinetoplast-mitochondrial DNA of Trypanosoma equiperdum. Comparative study of the dyskinetoplastic and wild strains . . . 248 R. M. Ezzell and C. M. Szego Luteinizing hormone-accelerated redistribution of lysosome-like organelles preceding dissolution of the nuclear envelope in rat oocytes maturing in vitro . . . . . . . . . . . . . . . . 264 M. Chalfie and J. N. Thomson Organization of neuronal microtubules in the nematode \bionameCaenorhabditis elegans . . . . . . . . . . . . . . . . 278 W. S. Sale and I. R. Gibbon Study of the mechanism of vanadate inhibition of the dynein cross-bridge cycle in sea urchin sperm flagella . . . 291 A. W. Coleman Use of the fluorochrome 4'6-diamidino-$2$-phenylindole in genetic and developmental studies of chloroplast DNA . . . . . . . . . . . . 299
P. E. Newburger and M. E. Chovaniec and J. S. Greenberger and H. J. Cohen Functional changes in human leukemic cell line HL-60. A model for myeloid differentiation . . . . . . . . . . . . 315 N. Krishnan and I. R. Kaiserman-Abramof and R. J. Lasek Helical substructure of neurofilaments isolated from Myxicola and squid giant axons . . . . . . . . . . . . . . . . . 323 R. J. Lasek and N. Krishnan and I. R. Kaiserman-Abramof Identification of the subunit proteins of $ 10$-nm neurofilaments isolated from axoplasm of squid and Myxicola giant axons . . . . . . . . . . . . . . . . . 336 J. Boyles and D. F. Bainton Changing patterns of plasma membrane-associated filaments during the initial phases of polymorphonuclear leukocyte adherence . . . . . . . . . . 347 E. B. Cramer and J. I. Gallin Localization of submembranous cations to the leading end of human neutrophils during chemotaxis . . . . . . . . . . . 369 J. H. Widdicombe and C. B. Basbaum and J. Y. Yee Localization of Na pumps in the tracheal epithelium of the dog . . . . . . . . . 380 G. F. Gauthier Ultrastructural identification of muscle fiber types by immunocytochemistry . . . 391 C. J. Brokaw Calcium-induced asymmetrical beating of triton-demembranated sea urchin sperm flagella . . . . . . . . . . . . . . . . 401 S. J. Burden and P. B. Sargent and U. J. McMahan Acetylcholine receptors in regenerating muscle accumulate at original synaptic sites in the absence of the nerve . . . 412 M. Gould-Somero and L. A. Jaffe and L. Z. Holland Electrically mediated fast polyspermy block in eggs of the marine worm, Urechis caupo . . . . . . . . . . . . . 426 P. Meda and A. Perrelet and L. Orci Increase of gap junctions between pancreatic B-cells during stimulation of insulin secretion . . . . . . . . . . . 441 Y. J. Schneider and P. Tulkens and C. de Duve and A. Trouet Fate of plasma membrane during endocytosis. I. Uptake and processing of anti-plasma membrane and control immunoglobulins by cultured fibroblasts 449 Y. Schneider and P. Tulkens and C. de Duve and A. Trouet Fate of plasma membrane during endocytosis. II. Evidence for recycling (shuttle) of plasma membrane constituents . . . . . . . . . . . . . . 466 C. B. Underhill and B. P. Toole Binding of hyaluronate to the surface of cultured cells . . . . . . . . . . . . . 475 R. Hand and J. R. Gautschi Replication of mammalian DNA in vitro. Evidence for initiation from fiber autoradiography . . . . . . . . . . . . 485 S. A. Cohen and D. W. Pumplin Clusters of intramembrane particles associated with binding sites for alpha-bungarotoxin in cultured chick myotubes . . . . . . . . . . . . . . . . 494 S. H. Zigmond and S. J. Sullivan Sensory adaptation of leukocytes to chemotactic peptides . . . . . . . . . . 517 D. A. Begg and G. W. Ellis Micromanipulation studies of chromosome movement. I. Chromosome-spindle attachment and the mechanical properties of chromosomal spindle fibers . . . . . 528 D. A. Begg and G. W. Ellis Micromanipulation studies of chromosome movement. II. Birefringent chromosomal fibers and the mechanical attachment of chromosomes to the spindle . . . . . . . 542 M. Porvaznik and T. J. MacVittie Detection of gap junctions between the progeny of a canine macrophage colony-forming cell in vitro . . . . . . 555 E. C. Beyer and K. T. Tokuyasu and S. H. Barondes Localization of an endogenous lectin in chicken liver, intestine, and pancreas 565 J. H. Eichhorn and B. Peterkofsky Quantitative biochemical analysis of microtubule content in normal and transformed 3T3 cells . . . . . . . . . 572 G. S. Bennett and S. A. Fellini and Y. Toyama and H. Holtzer Redistribution of intermediate filament subunits during skeletal myogenesis and maturation in vitro . . . . . . . . . . 577 D. A. Pepper and B. R. Brinkley Microtubule initiation at kinetochores and centrosomes in lysed mitotic cells. Inhibition of site-specific nucleation by tubulin antibody . . . . . . . . . . 585
M. S. Brown and J. L. Goldstein and M. Krieger and Y. K. Ho and R. G. Anderson Reversible accumulation of cholesteryl esters in macrophages incubated with acetylated lipoproteins . . . . . . . . 597 M. C. Willingham and F. R. Maxfield and I. H. Pastan alpha 2 Macroglobulin binding to the plasma membrane of cultured fibroblasts. Diffuse binding followed by clustering in coated regions . . . . . . . . . . . 614 R. J. Bloch Dispersal and reformation of acetylcholine receptor clusters of cultured rat myotubes treated with inhibitors of energy metabolism . . . . 626 J. Quintart and M. A. Leroy-Houyet and A. Trouet and P. Baudhuin Endocytosis and chloroquine accumulation during the cell cycle of hepatoma cells in culture . . . . . . . . . . . . . . . 644 B. Hardy and K. G. Bensch and S. L. Schrier Spectrin rearrangement early in erythrocyte ghost endocytosis . . . . . 654 R. A. Bloodgood and E. M. Leffler and A. T. Bojczuk Reversible inhibition of Chlamydomonas flagellar surface motility . . . . . . . 664 B. K. Vonderhaar Lactose synthetase activity in mouse mammary glands is controlled by thyroid hormones . . . . . . . . . . . . . . . . 675 C. G. Hellerqvist Intercellular adhesion as a function of the cell cycle traverse . . . . . . . . 682 T. Kinoshita and R. L. Nachman and R. Minick Isolation of human platelet plasma membranes with polylysine beads . . . . 688 J. J. Geuze and J. W. Slot and K. T. Tokuyasu Immunocytochemical localization of amylase and chymotrypsinogen in the exocrine pancreatic cell with special attention to the Golgi complex . . . . . 697 P. P. De Bruyn and S. Michelson Changes in the random distribution of sialic acid at the surface of the myeloid sinusoidal endothelium resulting from the presence of diaphragmed fenestrae . . . . . . . . . . . . . . . 708 R. Levenson and D. Housman Developmental program of murine erythroleukemia cells. Effect of the inhibition of protein synthesis . . . . 715 R. W. Burry and J. G. Wood Contributions of lipids and proteins to the surface charge of membranes. An electron microscopy study with cationized and anionized ferritin . . . 726 C. A. Gabel and E. M. Eddy and B. M. Shapiro Regional differentiation of the sperm surface as studied with 125I-diiodofluorescein isothiocyanate, an impermeant reagent that allows isolation of the labeled components . . 742 J. Braun and R. I. Sha'afi and E. R. Unanue Crosslinking by ligands to surface immunoglobulin triggers mobilization of intracellular $^{45}$Ca$^{2+}$ in B lymphocytes . . . . . . . . . . . . . . 755 J. Bereiter-Hahn and C. H. Fox and B. Thorell Quantitative reflection contrast microscopy of living cells . . . . . . . 767 G. A. Kaysen and L. Y. Chou and M. H. Humphreys Requirement of Zn to demonstrate HCO3-stimulated ATPase activity of rat small intestinal brush border . . . . . 780 L. D. Madison and B. Bergstrom-Porter and A. R. Torres and E. Shelton Regulation of surface topography of mouse peritoneal cells. Formation of microvilli and vesiculated pits on omental mesothelial cells by serum and other proteins . . . . . . . . . . . . . 783 M. E. Schwab and K. Suda and H. Thoenen Selective retrograde transsynaptic transfer of a protein, tetanus toxin, subsequent to its retrograde axonal transport . . . . . . . . . . . . . . . 798 J. P. Leonard and M. M. Salpeter Agonist-induced myopathy at the neuromuscular junction is mediated by calcium . . . . . . . . . . . . . . . . 811 J. L. Connolly and L. A. Greene and R. R. Viscarello and W. D. Riley Rapid, sequential changes in surface morphology of PC12 pheochromocytoma cells in response to nerve growth factor 820 P. L. Stern and M. S. Bretscher Capping of exogenous Forssman glycolipid on cells . . . . . . . . . . . . . . . . 829
K. G. Beam and S. L. Alper and G. E. Palade and P. Greengard Hormonally regulated phosphoprotein of turkey erythrocytes: localization to plasma membrane . . . . . . . . . . . . 1 J. Eveloff and K. J. Karnaky and P. Silva and F. H. Epstein and W. B. Kinter Elasmobranch rectal gland cell: autoradiographic localization of [3H]ouabain-sensitive Na, K--ATPase in rectal gland of dogfish, Squalus acanthias . . . . . . . . . . . . . . . 16 D. J. Scales and R. A. Sabbadini Microsomal T system: a stereological analysis of purified microsomes derived from normal and dystrophic skeletal muscle . . . . . . . . . . . . . . . . . 33 A. L. Hubbard and G. Wilson and G. Ashwell and H. Stukenbrok An electron microscope autoradiographic study of the carbohydrate recognition systems in rat liver. I. Distribution of 125I-ligands among the liver cell types 47 A. L. Hubbard and H. Stukenbrok An electron microscope autoradiographic study of the carbohydrate recognition systems in rat liver. II. Intracellular fates of the 125I-ligands . . . . . . . 65 H. T. Haigler and J. A. McKanna and S. Cohen Rapid stimulation of pinocytosis in human carcinoma cells A-431 by epidermal growth factor . . . . . . . . . . . . . 82 D. E. Chandler and J. Heuser Membrane fusion during secretion: cortical granule exocytosis in sex urchin eggs as studied by quick-freezing and freeze-fracture . . . . . . . . . . 91 K. T. Edds Isolation and characterization of two forms of a cytoskeleton . . . . . . . . 109 R. K. Draper and D. Chin and D. Eurey-Owens and I. E. Scheffler and M. I. Simon Biochemical and genetic characterization of three hamster cell mutants resistant to diphtheria toxin . . . . . . . . . . 116 R. D. Allen and L. R. Zacharski and S. T. Widirstky and R. Rosenstein and L. M. Zaitlin and D. R. Burgess Transformation and motility of human platelets: details of the shape change and release reaction observed by optical and electron microscopy . . . . . . . . 126 E. Frank and G. D. Fischbach Early events in neuromuscular junction formation in vitro: induction of acetylcholine receptor clusters in the postsynaptic membrane and morphology of newly formed synapses . . . . . . . . . 143 R. H. Masland and J. W. Mills Autoradiographic identification of acetylcholine in the rabbit retina . . . 159 P. H. Naccache and H. J. Showell and E. L. Becker and R. I. Sha'afi Involvement of membrane calcium in the response of rabbit neutrophils to chemotactic factors as evidenced by the fluorescence of chlorotetracycline . . . 179 M. A. Goldstein and J. P. Schroeter and R. L. Sass The Z lattice in canine cardiac muscle 187 K. Summers and M. W. Kirschner Characteristics of the polar assembly and disassembly of microtubules observed in vitro by darkfield light microscopy 205 D. J. Hill and J. Z. Borysenko Restriction of patching of bound concanavalin A after incorporation of arachidonic acid into the plasma membrane of virally transformed fibroblasts . . . . . . . . . . . . . . 218 S. R. Slaughter and D. E. Hultquist Membrane-bound redox proteins of the murine Friend virus-induced erythroleukemia cell . . . . . . . . . . 231 D. A. Begg and L. I. Rebhun pH regulates the polymerization of actin in the sea urchin egg cortex . . . . . . 241 W. Ip and D. A. Fischman High resolution scanning electron microscopy of isolated and in situ cytoskeletal elements . . . . . . . . . 249 E. G. Hayman and E. Ruoslahti Distribution of fetal bovine serum fibronectin and endogenous rat cell fibronectin in extracellular matrix . . 255 M. Chinkers and J. A. McKanna and S. Cohen Rapid induction of morphological changes in human carcinoma cells A-431 by epidermal growth factors . . . . . . . . 260
G. Saccomani and H. F. Helander and S. Crago and H. H. Chang and D. W. Dailey and G. Sachs Characterization of gastric mucosal membranes. X. Immunological studies of gastric (H$^+$ + K$^+$)-ATPase . . . . . 271 A. Tartakoff and P. Vassalli Plasma cell immunoglobulin M molecules. Their biosynthesis, assembly, and intracellular transport . . . . . . . . 284 A. Vorbrodt and P. Meo and G. Rovera Regulation of acid phosphatase activity in human promyelocytic leukemic cells induced to differentiate in culture . . 300 T. Ueda and P. Greengard and K. Berzins and R. S. Cohen and F. Blomberg and D. J. Grab and P. Siekevitz Subcellular distribution in cerebral cortex of two proteins phosphorylated by a cAMP-dependent protein kinase . . . . 308 E. Wang and R. K. Cross and P. W. Choppin Involvement of microtubules and $ 10$-nm filaments in the movement and positioning of nuclei in syncytia . . . 320 M. Büechi and T. Bächi Immunofluorescence and electron microscopy of the cytoplasmic surface of the human erythrocyte membrane and its interaction with Sendai virus . . . . . 338 R. N. Margolis and R. R. Cardell and R. T. Curnow Association of glycogen synthase phosphatase and phosphorylase phosphatase activities with membranes of hepatic smooth endoplasmic reticulum . . 348 J. R. Sanes and Z. W. Hall Antibodies that bind specifically to synaptic sites on muscle fiber basal lamina . . . . . . . . . . . . . . . . . 357 J. C. Linder and L. A. Staehelin A novel model for fluid secretion by the trypanosomatid contractile vacuole apparatus . . . . . . . . . . . . . . . 371 O. Frederiksen and K. Mòllgård and J. Rostgaard Lack of correlation between transepithelial transport capacity and paracellular pathway ultrastructure in Alcian blue-treated rabbit gallbladders 383 B. J. Dolnick and R. J. Berenson and J. R. Bertino and R. J. Kaufman and J. H. Nunberg and R. T. Schimke Correlation of dihydrofolate reductase elevation with gene amplification in a homogeneously staining chromosomal region in L5178Y cells . . . . . . . . . 394 F. Thoma and T. Koller and A. Klug Involvement of histone H1 in the organization of the nucleosome and of the salt-dependent superstructures of chromatin . . . . . . . . . . . . . . . 403 J. R. McIntosh and K. L. McDonald and M. K. Edwards and B. M. Ross Three-dimensional structure of the central mitotic spindle of Diatoma vulgare . . . . . . . . . . . . . . . . 428 K. L. McDonald and M. K. Edwards and J. R. McIntosh Cross-sectional structure of the central mitotic spindle of Diatoma vulgare. Evidence for specific interactions between antiparallel microtubules . . . 443 J. J. Catino and H. Busch and Y. Daskal and L. C. Yeoman Subcellular localization of DNA-binding protein BA by immunofluorescence and immunoelectron microscopy . . . . . . . 462 I. Vlodavsky and L. K. Johnson and G. Greenburg and D. Gospodarowicz Vascular endothelial cells maintained in the absence of fibroblast growth factor undergo structural and functional alterations that are incompatible with their in vivo differentiated properties 468 B. Hazelton and B. Mitchell and J. Tupper Calcium, magnesium, and growth control in the WI-38 human fibroblast cell . . . 487 C. B. Strader and J. P. Revel and M. A. Raftery Demonstration of the transmembrane nature of the acetylcholine receptor by labeling with anti-receptor antibodies 499 N. M. Hogg and B. Rotman Covalent attachment of enzyme as a membrane-label for viable eucaryotic cells . . . . . . . . . . . . . . . . . 511
J. J. Morrissey and D. V. Cohn Secretion and degradation of parathormone as a function of intracellular maturation of hormone pools . . . . . . . . . . . . . . . . . 521 K. L. Carraway and R. C. Doss and J. W. Huggins and R. W. Chesnut and C. A. Carraway Effects of cytoskeletal perturbant drugs on ecto 5'-nucleotidase, a concanavalin A receptor . . . . . . . . . . . . . . . 529 P. M. Saling and B. T. Storey Mouse gamete interactions during fertilization in vitro. Chlortetracycline as a fluorescent probe for the mouse sperm acrosome reaction 544 P. B. Moens Kinetochore microtubule numbers of different sized chromosomes . . . . . . 556 P. A. Steck and P. G. Voss and J. L. Wang Growth control in cultured 3T3 fibroblasts. Assays of cell proliferation and demonstration of a growth inhibitory activity . . . . . . . 562 W. J. Larsen and H. N. Tung and S. A. Murray and C. A. Swenson Evidence for the participation of actin microfilaments and bristle coats in the internalization of gap junction membrane 576 H. S. Kruth and J. Avigan and W. Gamble and M. Vaughan Effect of cell density on binding and uptake of low density lipoprotein by human fibroblasts . . . . . . . . . . . 588 C. G. Glabe and W. J. Lennarz Species-specific sperm adhesion in sea urchins. A quantitative investigation of bindin- mediated egg agglutination . . . 595 F. J. Chlapowski and L. Haynes The growth and differentiation of transitional epithelium in vitro . . . . 605 G. W. Schmidt and A. Devillers-Thiery and H. Desruisseaux and G. Blobel and N. H. Chua NH2-terminal amino acid sequences of precursor and mature forms of the ribulose-1,5-bisphosphate carboxylase small subunit from Chlamydomonas reinhardtii . . . . . . . . . . . . . . 615 M. Schliwa and U. Euteneuer and W. Herzog and K. Weber Evidence for rapid structural and functional changes of the melanophore microtubule-organizing center upon pigment movements . . . . . . . . . . . 623 S. B. Hellewell and D. L. Taylor The contractile basis of ameboid movement. VI. The solation-contraction coupling hypothesis . . . . . . . . . . 633 L. Y. Bourguignon Biochemical analysis of ligand-induced receptor patching and capping using a novel immunolactoperoxidase iodination technique . . . . . . . . . . . . . . . 649 S. S. Brown and J. A. Spudich Cytochalasin inhibits the rate of elongation of actin filament fragments 657 P. E. Barker and E. Stubblefield Ultrastructure of double minutes from a human tumor cell line . . . . . . . . . 663 P. T. Matsudaira and D. R. Burgess Identification and organization of the components in the isolated microvillus cytoskeleton . . . . . . . . . . . . . . 667