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Iwata T. PATHOLOGICAL STUDY ON AMYLOIDOSIS - MORPHOLOGICAL CHANGES IN LONG-TERM CULTURED SINUSOIDAL ENDOTHELIAL CELLS OF NORMAL AND AMYLOID LIVER OF MICE -. Pathol Int 1972. [DOI: 10.1111/j.1440-1827.1972.tb00738.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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153
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154
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Herman MM, Bensch KG, Marich KW, Glick D. The effects of gold thioglucose on mouse fibroblasts in vitro. Morphological and laser microprobe studies. Exp Mol Pathol 1972; 16:186-200. [PMID: 4335337 DOI: 10.1016/0014-4800(72)90034-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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155
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Diegelmann RF, Peterkofsky B. Inhibition of collagen secretion from bone and cultured fibroblasts by microtubular disruptive drugs. Proc Natl Acad Sci U S A 1972; 69:892-6. [PMID: 4502941 PMCID: PMC426589 DOI: 10.1073/pnas.69.4.892] [Citation(s) in RCA: 193] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Collagen synthesis in chick-embryo frontal bone and 3T3 fibroblasts from mice was measured by incorporation in vitro of [(14)C]proline into collagenase-digestible material. About 15-25% of the collagen synthesized by the frontal bone in 60 min, and 60% of that synthesized by the fibroblasts in 2 hr, was found to be soluble in the culture medium. The microtubular disruptive drugs colchicine and vinblastine, at 10 muM, inhibited collagen secretion in both systems almost completely. Formation of collagen hydroxyproline from proline was not inhibited by these drugs. Cytochalasin B, which impairs microfilament function, had no effect on collagen secretion. Our results support the theory that collagen is transported in vesicles to the cell membrane, where it is secreted. This conclusion is based on the similarity of the collagen-secreting system to other systems in which the movement of secretory vesicles or storage granules is inhibited by microtubule disruption.
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156
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Lowther DA, Natarajan M. The influence of glycoprotein on collagen fibril formation in the presence of chondroitin sulphate proteoglycan. Biochem J 1972; 127:607-8. [PMID: 5076205 PMCID: PMC1178702 DOI: 10.1042/bj1270607] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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157
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Gabbiani G, Hirschel BJ, Ryan GB, Statkov PR, Majno G. Granulation tissue as a contractile organ. A study of structure and function. J Exp Med 1972; 135:719-34. [PMID: 4336123 PMCID: PMC2139162 DOI: 10.1084/jem.135.4.719] [Citation(s) in RCA: 637] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
CONTRACTING GRANULATION TISSUES CONTAIN FIBROBLASTS THAT DEVELOP CHARACTERISTICS TYPICAL OF SMOOTH MUSCLE: (a) They contain an extensive cytoplasmic fibrillar system. (b) They show immunofluorescent labeling of their cytoplasm with human anti-smooth muscle serum. (c) The nuclei show complicated folds and indentations, indicative of cellular contraction. (d) There are cell-to-cell and cell-to-stroma attachments. (e) It is possible to extract similar quantities of actomyosin (having the same adenosine triphosphatase activity) from granulation tissue and from pregnant rat uterus. (f) Strips of granulation tissue, when tested pharmacologically in vitro, behave similarly to smooth muscle. All these data support the view that, under certain conditions, fibroblasts can differentiate into a cell type structurally and functionally similar to smooth muscle and that this cell, the "myo-fibroblast," plays an important role in connective tissue contraction.
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158
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159
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160
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Layman DL, Narayanan AS, Martin GR. The production of lysyl oxidase by human fibroblasts in culture. Arch Biochem Biophys 1972; 149:97-101. [PMID: 4335964 DOI: 10.1016/0003-9861(72)90302-5] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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161
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Wynne-Roberts CR, Castor CW. Ultrastructural comparison of rheumatoid and nonrheumatoid synovial fibroblasts grown in tissue culture. ARTHRITIS AND RHEUMATISM 1972; 15:65-83. [PMID: 4333901 DOI: 10.1002/art.1780150110] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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162
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Gabbiani G, Majno G. Dupuytren's contracture: fibroblast contraction? An ultrastructural study. THE AMERICAN JOURNAL OF PATHOLOGY 1972; 66:131-46. [PMID: 5009249 PMCID: PMC2032479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In 6 cases of Dupuytren's disease and 1 of Ledderhose's disease, the nodules of the palmar and plantar aponeurosis were examined by light and electron microscopy. The cells composing these nodules, presumably fibroblasts, showed three significant ultrastructural features: (1) a fibrillar system similar to that of smooth muscle cells; (2) nuclear deformations such as are found in contracted cells, the severest being recognizable by light microscopy (cross-banded nuclei); (3) cell-to-cell and cell-to-stroma attachments. Based on these data and on recent information about the biology of the fibroblasts, it is suggested that these cells are fibroblasts that have modulated into contractile cells (myofibroblasts), and that their contraction plays a role in the pathogenesis of the contracture observed clinically.
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163
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Weinstock M. Collagen formation--observations on its intracellular packaging and transport. ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE (VIENNA, AUSTRIA : 1948) 1972; 129:455-70. [PMID: 4339506 DOI: 10.1007/bf00316743] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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164
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Studies on regeneration blastemas of the planarianDugesia tigrina with special reference to differentiation of the muscle-connective tissue filament system. Dev Genes Evol 1972; 169:134-169. [PMID: 28304777 DOI: 10.1007/bf00649889] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/1971] [Indexed: 10/26/2022]
Abstract
Head blastemas in regeneratingDugesia tigrina (Planaria) have been studied light microscopically and electron microscopically. Acid phosphatase activity has been followed in early blastemas using a light microscopical cytochemical method. The possibilities of a collagen synthesis inhibiting substance α-α'-dipyridyl in analyzing fibrillogenesis in planarians have been explored.Following a brief discussion of the neoblast concept the general organization and characteristics of the blastema are described. Regeneration of the muscle-connective tissue filament system including the subepidermal membrane is analyzed in detail. It is stressed that the muscle cells, the filamentous sheaths and the subepidermal membrane in planarians should be visualized as a mutually dependent, integrated system. The hypothesis is proposed that neoblasts differentiate into myoblasts which both synthesize myofilaments and collagen. Collagen forms the filaments of the subepidermal membrane-muscle sheath system. No certain interference with collagen synthesis and secretion could be demonstrated in the experiments involving α-α'-dipyridyl.There was no evidence for significant changes in the activity and pattern of acid phosphatase during early stages of regeneration.The problems concerning the existence of neoblasts, their participation in regeneration and their origin (stock cell or result of a dedifferentiation process) are discussed.
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165
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Scharrer B. Cytophysiological features of hemocytes in cockroaches. ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE (VIENNA, AUSTRIA : 1948) 1972; 129:301-19. [PMID: 4339568 DOI: 10.1007/bf00307291] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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166
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Mollo F, Monga G. Banded structures in the connective tissue of lymphomas, lymphadenitis, and thymomas. VIRCHOWS ARCHIV. B, CELL PATHOLOGY 1971; 7:356-66. [PMID: 4994539 DOI: 10.1007/bf02892104] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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167
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Church RL, Pfeiffer SE, Tanzer ML. Collagen biosynthesis: synthesis and secretion of a high molecular weight collagen precursor (procollagen). Proc Natl Acad Sci U S A 1971; 68:2638-42. [PMID: 5288238 PMCID: PMC389490 DOI: 10.1073/pnas.68.11.2638] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Sodium dodecyl sulfate-acrylamide gel electrophoresis and molecular-sieve chromatography on 8% agarose demonstrate the existence of a very high molecular weight (500,000-600,000), proline-rich protein in cultured 3T6 fibroblasts that appears to be the precursor molecule (procollagen) of collagen. The kinetics of [(3)H]-proline uptake indicate that this precursor is synthesized at a different rate than are other cell proteins and is secreted apparently unchanged into the medium, where it undergoes modification; it then precipitates around the cells as collagen fibrils that contain the characteristic tropocollagen polypeptide chains. The solubility of this precursor in hot 5% Cl(3)CCOOH, its hydroxyproline to proline ratio, and its sensitivity to highly-purified bacterial collagenase all indicate that this molecule is of collagenous nature, but that it has considerable regions of noncollagen peptide (about half of the molecule is collagenase sensitive, and it has half of the normal amount of hydroxylated proline residues). These results support the concept of a procollagen molecule, of molecular weight about 500,000-600,000, that contains large regions of noncollagen peptides, which might allow the collagen alpha-chain regions to associate in register and that also can provide the correct chain composition for tropocollagen. Upon secretion of the procollagen molecule, the intercollagen-peptide regions are cleaved and the finished tropocollagen molecule then polymerizes into typical intercellular fibrils.
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168
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Shuangshoti S, Netsky MG, Jane JA. Neoplasms of mixed mesenchymal and neuroepithelial type. With consideration of the relationship between meningioma and neurilemmoma. J Neurol Sci 1971; 14:277-91. [PMID: 4332570 DOI: 10.1016/0022-510x(71)90217-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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169
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Culp LA, Grimes WJ, Black PH. Contact-inhibited revertant cell lines isolated from SV40-transformed cells. I. Biologic, virologic, and chemical properties. J Biophys Biochem Cytol 1971; 50:682-90. [PMID: 4329153 PMCID: PMC2108303 DOI: 10.1083/jcb.50.3.682] [Citation(s) in RCA: 73] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Two contact-inhibited "revertant" cell lines were isolated from an SV40-transformed mouse 3T3 cell line (SV-3T3) after exposure to 5-fluoro-2'-deoxyuridine. Revertant cells resembled 3T3 cells morphologically and grew to saturation densities which were similar to those of 3T3 cells; however, revertant cells readily formed both single and multinucleated giant cells in confluent cultures. SV40 virus was rescued from revertant cells by fusion with permissive monkey cells. The rescued virus transformed 3T3 cells with the same efficiency as wild type virus, and produced transformed colonies which were phenotypically similar to those produced by wild type virus. The revertant cells also resembled normal 3T3 cells in that they contained higher quantities of sialic acid than SV-3T3 cells. An inverse correlation was found between the saturation density of cells and their sialic acid content. Collagen content, however, of revertant cells was similar to that of SV-3T3 cells. The data presented suggest that the property of contact inhibition in revertant cells is related to the sialic acid content of the plasma membrane and that changes in sialic acid content of transformed cells are not directly specified by the viral genome.
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170
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McNutt NS, Culp LA, Black PH. Contact-inhibited revertant cell lines isolated from SV40-transformed cells. II. Ultrastructural study. J Biophys Biochem Cytol 1971; 50:691-708. [PMID: 4329154 PMCID: PMC2108300 DOI: 10.1083/jcb.50.3.691] [Citation(s) in RCA: 99] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The ultrastructural appearances of normal 3T3, SV40-transformed 3T3 (SV-3T3), and F1A revertant cell lines are compared. Both confluent and subconfluent cultures are described after in situ embedding of the cells for electron microscopy. There is striking nuclear pleomorphism in F1A revertant cells, with many cells having large nuclei compared to the less variable nuclear morphology of both normal 3T3 and SV-3T3 cells. Under the culture conditions used, deep infoldings of the nuclear envelope are prominent in growing cells, e.g., subconfluent normal 3T3 and confluent SV-3T3 cells. Such infoldings are infrequently seen in cultures which display contact inhibition of growth, e.g., normal 3T3 or F1A revertant cells grown just to confluence. In confluent cultures, the cytoplasmic organelles in revertant cells closely resemble those of normal 3T3 cells. In both normal and revertant cells in confluent culture, the peripheral cytoplasm (ectoplasm) has many 70 A filaments (alpha filaments), which are frequently aggregated into bundles. Alpha filaments are also abundant in the ectoplasm near regions of cell-to-cell apposition and in the motile cell processes (filopodia). The abundance and state of aggregation of alpha filaments correlates with contact inhibition of movement and growth in these cell lines since fewer bundles of alpha filaments are seen in growing cells than in contact-inhibited cells. This observation suggests that these filaments may be an important secondary component in the regulation of contact inhibition of movement and, possibly, of growth in normal and revertant cells.
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171
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Kadar A, Gardner DL, Bush V. The relation between the fine structure of smooth-muscle cells and elastogenesis in the chick-embryo aorta. J Pathol 1971; 104:253-60. [PMID: 4109301 DOI: 10.1002/path.1711040407] [Citation(s) in RCA: 37] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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172
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Engh CA, Schofield BH, Doty SB, Robinson RA. Perikaryal synthetic function following reversible and irreversible peripheral axon injuries as shown by radioautography. J Comp Neurol 1971; 142:465-79. [PMID: 4106863 DOI: 10.1002/cne.901420405] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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173
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Rosbash M, Penman S. Membrane-associated protein synthesis of mammalian cells. I. The two classes of membrane-associated ribosomes. J Mol Biol 1971; 59:227-41. [PMID: 4998471 DOI: 10.1016/0022-2836(71)90048-9] [Citation(s) in RCA: 115] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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174
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Hanak H, Böck P. [Ultrastructure of the muscle-tendon junction of skeletal and heart muscle]. JOURNAL OF ULTRASTRUCTURE RESEARCH 1971; 36:68-85. [PMID: 5568361 DOI: 10.1016/s0022-5320(71)80089-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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175
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176
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Submicroscopic investigation of the genesis of collagen fibers in experimental silicosis. Bull Exp Biol Med 1971. [DOI: 10.1007/bf00813603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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177
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Bates CJ, Levene CI. The synthesis of sulphated glycosaminoglycans by the mouse fibroblast line 3T6. BIOCHIMICA ET BIOPHYSICA ACTA 1971; 237:214-26. [PMID: 4255187 DOI: 10.1016/0304-4165(71)90313-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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178
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Bischoff R. Acid mucopolysaccharide synthesis by chick amnion cell cultures. Inhibition by 5-bromodeoxyuridine. Exp Cell Res 1971; 66:224-36. [PMID: 4253326 DOI: 10.1016/s0014-4827(71)80032-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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179
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Frederickson RG, Low FN. The fine structure of perinotochordal microfibrils in control and enzyme-treated chick embryos. THE AMERICAN JOURNAL OF ANATOMY 1971; 130:347-75. [PMID: 4324322 DOI: 10.1002/aja.1001300307] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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180
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Kischer CW, Keeter JS. Anchor filament bundles in embryonic skin: origin and termination. THE AMERICAN JOURNAL OF ANATOMY 1971; 130:179-93. [PMID: 5547001 DOI: 10.1002/aja.1001300205] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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181
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Espey LL. Multivesicular structures in proliferating fibroblasts of rabbit ovarian follicles during ovulation. J Cell Biol 1971; 48:437-42. [PMID: 5102557 PMCID: PMC2108174 DOI: 10.1083/jcb.48.2.437] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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182
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Layman DL, McGoodwin EB, Martin GR. The nature of the collagen synthesized by cultured human fibroblasts. Proc Natl Acad Sci U S A 1971; 68:454-8. [PMID: 5277100 PMCID: PMC388959 DOI: 10.1073/pnas.68.2.454] [Citation(s) in RCA: 208] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The hydroxyproline-containing proteins (hyproproteins) synthesized by cultured human fibroblasts have been partially characterized. The hyproprotein extracted from the cell layer was found to be similar to the collagen extracted from skin in the ratio of hydroxyproline to proline, chain composition, solubility, and resistance to proteolytic digestion.The hyproproteins isolated from the medium were different. About 20% of the peptide-bound hydroxyproline was found in randomly coiled chains. The alpha2 chains were present in considerable excess over the alpha1 chains, suggesting that the alpha2 chain may be synthesized in quantities greater than required to form a collagen molecule with a chain composition (alpha1)(2)alpha2. The remaining medium hyproprotein appeared to be an unusual form of native collagen which, unlike typical native collagen, was soluble under physiological conditions. This hyproprotein did not yield alpha chains when denatured and contained material that had a molecular weight greater than alpha chains. A similar size distribution was observed in the protein synthesized in the presence of beta-aminopropionitrile, a specific inhibitor of collagen cross-linking. After treatment with pepsin, typical alpha1 and alpha2 chains were obtained from the protein in a 2:1 ratio. Since the medium protein is soluble and has properties different from the typical collagen molecule, it may represent a modified form that functions in the transport of collagen from the cell to the fiber.
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183
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Posner M, Nove J, Sato G. Selection procedures for mammalian cells in monolayer culture. IN VITRO 1971; 6:253-6. [PMID: 5167076 DOI: 10.1007/bf02625937] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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184
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Spitznas M, Luciano L, Reale E. The fine structure of the rabbit sclera with special reference to a peculiar structure in the fibroblast rough surfaced endoplasmic reticulum. ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE (VIENNA, AUSTRIA : 1948) 1971; 118:439-48. [PMID: 5566324 DOI: 10.1007/bf00331196] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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185
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Göthlin G, Ericsson JL. Electron microscopic studies of cytoplasmic filaments and fibers in different cell types of fracture callus in the rat. VIRCHOWS ARCHIV. B, CELL PATHOLOGY 1970; 6:24-37. [PMID: 4989027 DOI: 10.1007/bf02899109] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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186
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Leighton J, Estes LW, Goldblatt PJ, Brada Z. The formation of histotypic fibrous collagen in matrix tissue culture by 3T6 mouse fibroblasts: a response to ascorbic acid. IN VITRO 1970; 6:153-61. [PMID: 4108597 DOI: 10.1007/bf02617758] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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187
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188
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Breen PC, Stenchever MA. Some effects of diazepam on the fine structure of human fibroblasts in tissue culture. Am J Obstet Gynecol 1970; 108:520-7. [PMID: 5505980 DOI: 10.1016/0002-9378(70)90225-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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189
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Cornah MS, Meachim G, Parry EW. Banded structures in the matrix of human and rabbit nucleus pulposus. J Anat 1970; 107:351-62. [PMID: 4098862 PMCID: PMC1234029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
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190
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Comings DE, Okada TA. Electron microscopy of human fibroblasts in tissue culture during logarithmic and confluent stages of growth. Exp Cell Res 1970; 61:295-301. [PMID: 5459829 DOI: 10.1016/0014-4827(70)90451-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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191
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Anderson HC, Chacko S, Abbott J, Holtzer H. The loss of phenotypic traits by differentiated cells in vitro. VII. Effects of 5-bromodeoxyuridine and prolonged culturing on fine structure of chondrocytes. THE AMERICAN JOURNAL OF PATHOLOGY 1970; 60:289-312. [PMID: 5457215 PMCID: PMC2032892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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192
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Halpern M, Rubin H. Proteins released from chick embryo fibroblasts in culture. II. Studies on cells in different states of culture. Exp Cell Res 1970; 60:96-102. [PMID: 4314773 DOI: 10.1016/0014-4827(70)90492-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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193
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Pantíc V, Pavlović-Hournac M, Rappaport L. [Relation between the ultrastructure cultures and grafts of rat thyroid glands and their capacity to synthesize thyroglobulin]. JOURNAL OF ULTRASTRUCTURE RESEARCH 1970; 31:37-45. [PMID: 5442607 DOI: 10.1016/s0022-5320(70)90143-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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194
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195
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Joyce SJ, Cohen AS. The interphalangeal area of Rana pipiens: a light and electron microscopic study of the development of a fibrocartilaginous joint (symphysis). J Morphol 1970; 130:315-36. [PMID: 5436212 DOI: 10.1002/jmor.1051300305] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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196
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Cornell R. Ultrastructural variants among peripheral vesicles and vacuoles of murine embryo cell strains. Exp Cell Res 1970; 59:177-85. [PMID: 5461021 DOI: 10.1016/0014-4827(70)90589-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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197
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Williams G. The pleural reaction to injury: a histological and electron-optical study with special reference to elastic-tissue formation. J Pathol 1970; 100:1-7. [PMID: 5470533 DOI: 10.1002/path.1711000102] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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198
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Rifkin E, Cheng TC, Hohl HR. An electron-microscope study of the constituents of encapsulating cysts in the American oyster, Crassostrea virginica, formed in response to Tylocephalum metacestodes. J Invertebr Pathol 1969; 14:211-26. [PMID: 5385138 DOI: 10.1016/0022-2011(69)90108-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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199
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Abstract
Symmetrical, extracellular fibrils, which are related to the "special fibrils" of the dermis described by Palade and Farquhar, have been found along the outer surface of the basement membrane covering the notochord in the tail of Rana catesbeiana (bullfrog) tadpoles. The fibrils are approximately 7,500 A long and occur singly or in clusters. The single fibrils are characterized by a symmetrical transverse band pattern and by attachment at both ends to the basement membrane. The clusters are various complex configurations which seemingly represent symmetrical fibrils in different states of aggregation. Symmetrical fibrils also occur in the skin of the tadpole tail and in the skin of the toad, Bufo marinus. It is proposed that a narrow, symmetrical fibril is the fundamental "special fibril."
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Kimmel CB. On the RNA in cultured myeloma cells producing immunoglobulin. BIOCHIMICA ET BIOPHYSICA ACTA 1969; 182:361-74. [PMID: 4183552 DOI: 10.1016/0005-2787(69)90187-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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