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  • Articles  (19)
  • Cells, Cultured  (12)
  • Pregnancy  (7)
  • American Association for the Advancement of Science (AAAS)  (19)
  • Blackwell Publishing Ltd
  • 1975-1979  (19)
Collection
  • Articles  (19)
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Keywords
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  • American Association for the Advancement of Science (AAAS)  (19)
  • Blackwell Publishing Ltd
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Year
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  • 1
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    Dieldrin-induced mortality in an endangered species, the gray bat (Myotis grisescens) (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-24
    Description: Brains of juvenile gray bats, Myotis grisescens, found dead beneath maternity roosts in two Missouri caves contained lethal concentrations of dieldrin. One colony appeared to be abnormally small, and more dead bats were found a year after the juvenile bats had been collected. This is the first report to link the field mortality of bats directly to insecticide residues acquired through the food chain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clark, D R Jr -- LaVal, R K -- Swineford, D M -- New York, N.Y. -- Science. 1978 Mar 24;199(4335):1357-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/564550" target="_blank"〉PubMed〈/a〉
    Keywords: Aldrin/adverse effects ; Animals ; Body Weight ; Brain Chemistry ; *Chiroptera ; Dieldrin/*adverse effects/analysis ; Environmental Exposure ; Female ; Lactation ; Male ; Missouri ; Pesticide Residues ; Pregnancy
    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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    Lens epithelial cell elongation in the absence of microtubules: evidence for a new effect of colchicine (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-11-16
    Description: Embryonic chick lens epithelial cells cultured in serum-supplemented medium elongated in the absence of microtubules after treatment with the antimicrotubule drug nocodazole. Colchicine, at concentrations lower than those that dissociate microtubules, blocks cell elongation and the associated increase in cell volume. These results indicate that an increase in cell volume, not microtubules, is responsible for lens cell elongation and suggest a previously undescribed effect of colchicine on cell volume regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Beebe, D C -- Feagans, D E -- Blanchette-Mackie, E J -- Nau, M E -- New York, N.Y. -- Science. 1979 Nov 16;206(4420):836-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/493982" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzimidazoles/pharmacology ; Carbamates/pharmacology ; Cells, Cultured ; Chick Embryo ; Colchicine/*pharmacology ; Epithelium/ultrastructure ; Lens, Crystalline/*cytology ; Microtubules/*drug effects
    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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    Collagenase immunolocalization in cultures of rheumatoid synovial cells (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-05-19
    Description: Cultures of rheumatoid synovial cells that have been enzymatically dissociated and are adherent to a culture vessel are morphologically heterogeneous. When these cells are cultured on a collagenous substrate for 2 to 6 days at 37 degrees C in serum-free medium, they produce collagenase. A monospecific antibody to human collagenase has localized the enzyme extracellularly around cytoplasmic extensions of dendritic cells and intracellularly within a few macrophage-like and fibroblast-like cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Woolley, D E -- Harris, E D Jr -- Mainardi, C L -- Brinckerhoff, C E -- New York, N.Y. -- Science. 1978 May 19;200(4343):773-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/205952" target="_blank"〉PubMed〈/a〉
    Keywords: Arthritis, Rheumatoid/*enzymology ; Cells, Cultured ; Fibroblasts/enzymology ; Humans ; Microbial Collagenase/antagonists & inhibitors/*metabolism ; Synovial Fluid/cytology
    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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    Hepatitis B virus and sex ratio of offspring (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-08-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Drew, J S -- London, W T -- Lustbader, E D -- Hesser, J E -- Blumberg, B S -- New York, N.Y. -- Science. 1978 Aug 25;201(4357):687-92.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/566954" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Birth Order ; Cross Reactions ; Female ; Fetal Death ; Graft Survival ; Hepatitis B/immunology/*physiopathology/transmission ; Hepatitis B Surface Antigens/analysis ; Humans ; Male ; Parity ; Pregnancy ; Sex Factors ; *Sex Ratio
    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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    Estrogen formation in the early rabbit embryo (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-13
    Description: Androgen formation (3beta-hydroxysteroid dehydrogenase activity) was detectable in the rabbit blastocyst on day 5 of gestation (before implantation); estrogen formation was first detectable on day 7. The capacity to form estrogen on the day of implantation suggests that estrogen formation in the blastocyst may play a role in the implantation process.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉George, F W -- Wilson, J D -- New York, N.Y. -- Science. 1978 Jan 13;199(4325):200-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/579477" target="_blank"〉PubMed〈/a〉
    Keywords: 3-Hydroxysteroid Dehydrogenases/*metabolism ; Androgens/biosynthesis ; Animals ; Blastocyst/*metabolism ; *Embryo Implantation ; Embryonic Development ; Estradiol/*biosynthesis ; Female ; Gestational Age ; Pregnancy ; Rabbits
    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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  • 6
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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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  • 7
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    Nature and nurture in development of the autonomic neuron (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-03-31
    Description: Arguments are presented for the hypothesis that during an early stage of development the cells which become principal neurons of the autonomic nervous system possess information regarding the positions they will occupy within the body. A second stage of development, during which a decision is made regarding which neurotransmitter to employ, is delayed until each neuron has assumed its permanent position in the body and has sampled, presumably via its growing axons, the peripheral field which it will innervate. The development of cholinergic mechanisms takes precedence; adrenergic neurons may develop only when cholinergic sites have been occupied. An extended period during which the differentiation of transmitter mechanisms may be modulated permits the neuron to adequately sample the periphery prior to commitment to a specific transmitter economy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bunge, R -- Johnson, M -- Ross, C D -- New York, N.Y. -- Science. 1978 Mar 31;199(4336):1409-16.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/24273" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenergic Fibers/cytology ; Animals ; Autonomic Nervous System/*embryology/growth & development ; Cell Differentiation ; Cells, Cultured ; Chimera ; Cholinergic Fibers/cytology ; Embryonic Induction ; Ganglia, Autonomic/cytology ; Heart/innervation ; Intestines/innervation ; Nerve Endings/ultrastructure ; Neurotransmitter Agents/metabolism ; Phylogeny ; Synaptic Vesicles/ultrastructure
    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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    Substance P: evidence for diverse roles in neuronal function from cultured mouse spinal neurons (1979)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1979-09-28
    Description: Mouse spinal neurons grown in tissue culture were used to examine the membrane mechanisms of action of the peptide substance P. Two functionally distinct actions were observed, one being a rapidly desensitizing excitation, and the other being a dose-dependent, reversible depression of excitatory responses to the putative amino acid neurotransmitter glutamate. These effects on excitability suggest that substance P may play more than one role in intercellular communication in the nervous system.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Vincent, J D -- Barker, J L -- New York, N.Y. -- Science. 1979 Sep 28;205(4413):1409-12.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/224464" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Communication ; Cells, Cultured ; Electric Conductivity ; Excitatory Amino Acid Antagonists ; Glutamates/pharmacology ; Membrane Potentials ; Mice ; Neural Inhibition ; Spinal Cord/cytology/*physiology ; Substance P/*physiology ; Synaptic Transmission
    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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    Deficiencies of glucosamine-6-sulfate or galactosamine-6-sulfate sulfatases are responsible for different mucopolysaccharidoses (1978)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1978-01-06
    Description: [1-3H]Galactitol-6-sulfate, N- [1-3H]acetylgalactosaminitol-6-sulfate, N-[1-3H]acetylglucosaminitol-6-sulfate, N-acetylglucosamine-6-sulfate, and 6-sulfated tetrasaccharides from chondroitin-6-sulfate have been used for the measurement of 6-sulfatase activity of extracts of normal skin fibroblasts and of fibroblasts cultured from patients with genetic mucopolysaccharidoses. With these substrates, extracts of fibroblasts derived from Morquio patients lack or have greatly reduced activities for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and 6-sulfated tetrasaccharides but have normal activity for N-acetylglucosamine-6-sulfate and its alditol; those derived from a patient with a newly discovered mucopolysaccharidosis have greatly reduced activity for N-acetylglucosamine-6-sulfate and its alditol but normal activity for galactitol-6-sulfate, N-acetylgalactosaminitol-6-sulfate, and the 6-sulfated tetrasaccharides. These findings demonstrate the existence of two different hexosamine-6-sulfate sulfatases, specific for the glucose or galactose configuration of their substrates. Their respective deficiencies, causing inability to degrade keratan sulfate and heparan sulfate in one case and keratan sulfate and chondroitin-6-sulfate in the other, are responsible for different clinical phenotypes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Di Ferrante, N -- Ginsberg, L C -- Donnelly, P V -- Di Ferrante, D T -- Caskey, C T -- New York, N.Y. -- Science. 1978 Jan 6;199(4324):79-81.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratories of Connective Tissue Research, Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17569489" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylgalactosamine/analogs & derivatives/metabolism ; Acetylglucosamine/analogs & derivatives/metabolism ; Cells, Cultured ; Child, Preschool ; Chondroitin Sulfates/metabolism ; Chondroitinsulfatases/*deficiency/metabolism ; Fibroblasts/enzymology ; Galactitol/metabolism ; Heparitin Sulfate/metabolism ; Humans ; Hydrogen-Ion Concentration ; Keratan Sulfate/metabolism ; Male ; Mucopolysaccharidoses/*enzymology ; Mucopolysaccharidosis III/enzymology ; Mucopolysaccharidosis IV/*enzymology ; Skin/cytology/enzymology ; Substrate Specificity ; Sulfatases/*deficiency/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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  • 10
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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
    Published by American Association for the Advancement of Science (AAAS)
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