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  • Cells, Cultured  (28)
  • American Association for the Advancement of Science (AAAS)  (28)
  • Elsevier
  • 2020-2024
  • 1975-1979  (28)
  • 1978  (28)
  • 1977
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (28)
  • Elsevier
Years
  • 2020-2024
  • 1975-1979  (28)
Year
  • 1978  (28)
  • 1977
  • 1979  (26)
  • 1
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    Loss of division potential in vitro: aging or differentiation? (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-15
    Description: We have examined the hypothesis that diploid cells grown in vitro age, and propose that only proliferative potential and not life-span is telescoped. We suggest that explanted or transplanted diploid cells are driven to divide by the process of subculturing in vitro or in vivo and, in response to this pressure, also complete their differentiation and become refractory to further mitotic stimulation. We conclude that differentiation rather than "mortality" distinguishes diploid from transformed cells and that the former may not age in vitro, but are lost because culture methods are selective for cycling cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, E -- Marek, L F -- Levinstone, D S -- Merrill, C -- Sher, S -- Young, I T -- Eden, M -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1158-63.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725592" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Cycle ; *Cell Differentiation ; *Cell Division ; *Cell Survival ; Cells, Cultured ; Fibroblasts
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Age affect and replicative life-span of fibroblasts of diabetic, prediabetic, and normal donors: another look at the data (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gleason, R E -- Goldstein, S -- New York, N.Y. -- Science. 1978 Dec 15;202(4373):1217-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/725599" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; *Aging ; Cell Division ; Cell Survival ; Cells, Cultured ; Diabetes Mellitus/*physiopathology ; Humans ; Middle Aged ; Prediabetic State/*physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Gene amplification and drug resistance in cultured murine cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-12-08
    Description: Resistance of mouse cells to the folate analog, methotrexate, results from selection of increasingly resistant cells on progressive increases of methotrexate in the culture medium. High-level resistance is associated with high rates of synthesis of dihydrofolate reductase and correspondingly high numbers of reductase genes. In some variants high resistance and gene copy number are stable in the absence of selection pressure, whereas in others they are unstable. Analogies are made to antibiotic and insecticide resistance wherein selection of organisms with increased capacity to counteract the drug effect results in emergence of resistance. Gene amplification may underlie many such resistance phenomena.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schimke, R T -- Kaufman, R J -- Alt, F W -- Kellems, R F -- New York, N.Y. -- Science. 1978 Dec 8;202(4372):1051-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715457" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Cells, Cultured ; Crossing Over, Genetic ; DNA Replication ; *Drug Resistance ; Folic Acid Antagonists ; *Genes ; Methotrexate/*pharmacology ; RNA, Messenger/genetics ; Tetrahydrofolate Dehydrogenase/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Entry of insulin into human cultured lymphocytes: electron microscope autoradiographic analysis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-17
    Description: Electron microscope autoradiographs were prepared of IM-9 human cultured lymphocytes incubated with iodine-125-labeled insulin. With the use of [125I]insulin and Ilford L-4 emulsion, the technique had a resolution half-distance of approximately 0.085 micrometer. Autoradiographs revealed a time-dependent entry of insulin into the cell interior that was maximal after 30 minutes of incubation. At this time point nearly 40 percent of the [125I]insulin was in the interior of the cell at a distance 1 micrometer or greater from the plasma membrane. Grain distribution and volume density analyses revealed that the intracellular insulin was concentrated in the endoplasmic reticulum and nuclear membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldfine, I D -- Jones, A L -- Hradek, G T -- Wong, K Y -- Mooney, J S -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):760-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715440" target="_blank"〉PubMed〈/a〉
    Keywords: Autoradiography ; Biological Transport ; Cell Nucleus/metabolism ; Cells, Cultured ; Endoplasmic Reticulum/metabolism ; Humans ; Insulin/*metabolism ; Kinetics ; Lymphocytes/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    Growth of infective forms of Trypanosoma rhodesiense in vitro, the causative agent of African trypanosomiasis (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-11-17
    Description: A new approach to the culture of African trypanosomes led to the growth of the infective forms of the causative agent of human African trypanosomiasis. Infective cultures of Trypanosoma rhodesiense were initiated and maintained in vitro on Chinese hamster lung cells. By changing daily one-third of the Hepes-buffered RPMI 1640 medium containing 20 percent fetal bovine serum, the trypanosome numbers increased to 3 X 10(6) to 5 X 10(6) cells per milliliter. After 80 days in vitro at 37 degrees C, the cultured trypomastigotes are infective for mice and rats and morphologically similar to bloodstream trypomastigotes in having a subterminal kinetoplast and a surface coat. In addition, they possess L-alpha-glycerophosphate oxidase, the predominant steady-state terminal oxidase of bloodstream trypomastigotes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, G C -- Shimer, S P -- Caughey, B -- Sauer, L S -- New York, N.Y. -- Science. 1978 Nov 17;202(4369):763-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/715441" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; Oxidoreductases/metabolism ; Trypanosoma brucei brucei/cytology/enzymology/*growth & development ; Trypanosomiasis, African/*parasitology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    Ultraviolet radiation--induced chromosomal abnormalities in fetal fibroblasts from New Zealand black mice (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-09-08
    Description: Fibroblasts from New Zealand Black mouse fetuses manifest increased frequency of chromosomal breaks and interchanges after exposure to ultraviolet radiation when compared with cells from BABL/c fetuses. This chromosomal instability is similar to what has been reported in cells from patients with xeroderma pigmentosum and may be related to the chromosomally abnormal clones and malignancy previously reported in adult New Zealand Black mice.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddy, A L -- Fialkow, P G -- Salo, A -- New York, N.Y. -- Science. 1978 Sep 8;201(4359):920-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/684417" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cells, Cultured ; *Chromosome Aberrations ; Chromosomes/*radiation effects ; Disease Models, Animal ; Dose-Response Relationship, Radiation ; Mice ; Mice, Inbred BALB C/physiology ; Mice, Inbred NZB/*physiology ; *Ultraviolet Rays ; Xeroderma Pigmentosum/physiopathology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Virus-induced diabetes mellitus: reovirus infection of pancreatic beta cells in mice (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-11
    Description: Reovirus type 3, passaged in pancreatic beta-cell cultures, produced an insulitis when inoculated into 1- to 2-week-old mice. By means of a double-label antibody technique, in which we used fluorescein-labeled antibody to reovirus and rhodamine-labeled antibody to insulin, reovirus antigens were found in beta cells. By electron microscopy, viral particles in different stages of morphogenesis were observed in insulin-containing beta cells but not glucagon-containing alpha cells. The infection resulted in destruction of beta cells, reduction in the insulin content of the pancreas, and alteration in the host's capacity to respond normally to a glucose tolerance test.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Onodera, T -- Jenson, A B -- Yoon, J W -- Notkins, A L -- New York, N.Y. -- Science. 1978 Aug 11;201(4355):529-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/208156" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Viral/analysis ; Cells, Cultured ; Diabetes Mellitus, Experimental/etiology/metabolism/*microbiology ; Diabetes Mellitus, Type 1/microbiology ; Insulin/metabolism ; Islets of Langerhans/metabolism/*microbiology ; Mammalian orthoreovirus 3/immunology ; Mice ; Reoviridae Infections/*complications ; Virus Replication
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
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    Enkephalin-containing neurons visualized in spinal cord cell cultures (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-04
    Description: Neuronal cells, axons, and terminals containing immunoreactive enkephalin have been visualized in cultures of dissociated fetal spinal cord. These cultures may provide a valuable system in which to explore the effects of chronic drug treatment on the physiology of enkephalin-containing cells and their interactions with other cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Neale, J H -- Barker, J L -- Uhl, G R -- Snyder, S H -- New York, N.Y. -- Science. 1978 Aug 4;201(4354):467-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/351811" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Axons/metabolism ; Cells, Cultured ; Cytoplasm/metabolism ; Endorphins/*metabolism ; Enkephalins/*metabolism ; Fluorescent Antibody Technique ; Ganglia, Spinal/metabolism ; Mice ; Neurons/*metabolism ; Spinal Cord/cytology/embryology/*metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Pattern formation by cultured human epidermal cells: development of curved ridges resembling dermatoglyphs (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-23
    Description: In cultures made from disaggregated human epidermal cells, growth to a confluent cell layer is followed by the emergence of patterns resembling those of human dermatoglyphs. These patterns reflect intrinsic properties of kertinocytes. In vivo, only the epidermis of the volar surfaces forms patterns, but in culture, patterns are formed by epidermal cells from other sites as well. Patterns develop by a process of cell movement which first produces ridges and then curves the ridges into figures of increasing complexity, ultimately whorls.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, H -- Thomas, J -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1385-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/663617" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Differentiation ; Cell Movement ; Cells, Cultured ; *Dermatoglyphics ; Embryonic Induction ; Epidermis/*cytology ; Fibroblasts/cytology ; Humans ; Time Factors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Preparation of sarcolemmal membrane from myocardial tissue culture monolayer by high-velocity gas dissection (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-06-23
    Description: A high-velocity stream of nitrogen is used to simultaneously disrupt myocardial cells in monolayer culture and fractionate their sarcolemmal membranes. The membranes show a high degree of ultrastructural and enzymatic purity, with less than 1 percent intracellular residuum. They are produced in less than 1 second and remain as tightly adherent sheets on the surface on which the cells were grown. The cells are exposed to no agent other than nitrogen gas during the preparative procedure.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Langer, G A -- Frank, J S -- Philipson, K D -- New York, N.Y. -- Science. 1978 Jun 23;200(4348):1388-91.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566465" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Fractionation/methods ; Cells, Cultured ; Ferritins ; Membrane Proteins/analysis ; Microscopy, Electron ; Microscopy, Electron, Scanning ; Myocardium/ultrastructure ; Nitrogen ; Rats ; *Sarcolemma/analysis/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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