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  • Animals  (1.046)
  • 1980-1984  (1.046)
  • 1965-1969
  • 1935-1939
  • 1
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    Laser microsurgery in cell and developmental biology (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-07-31
    Beschreibung: New applications of laser microbeam irradiation to cell and developmental biology include a new instrument with a tunable wavelength (217- to 800-nanometer) laser microbeam and a wide range of energies and exposure durations (down to 25 X 10(-12) second). Laser microbeams can be used for microirradiation of selected nucleolar genetic regions and for laser microdissection of mitotic and cytoplasmic organelles. They are also used to disrupt the developing neurosensory appendages of the cricket and the imaginal discs of Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berns, M W -- Aist, J -- Edwards, J -- Strahs, K -- Girton, J -- McNeill, P -- Rattner, J B -- Kitzes, M -- Hammer-Wilson, M -- Liaw, L H -- Siemens, A -- Koonce, M -- Peterson, S -- Brenner, S -- Burt, J -- Walter, R -- Bryant, P J -- van Dyk, D -- Coulombe, J -- Cahill, T -- Berns, G S -- New York, N.Y. -- Science. 1981 Jul 31;213(4507):505-13.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7017933" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; *Cell Physiological Phenomena ; Chloroplasts/physiology ; Drosophila ; *Lasers ; Microscopy, Phase-Contrast ; Microsurgery/*methods ; Mitochondria/physiology ; Mitosis ; Neurons/physiology ; Plant Physiological Phenomena
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 2
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    L-Ornithine decarboxylase:an essential role in early mammalian embryogenesis (1980)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1980-05-02
    Beschreibung: The highly selective, enzyme-activated, irreversible inhibitor of L-ornithine decarboxylase, DL-alpha-difluoromethylornithine, suppresses the increase in uterine L-ornithine decarboxylase activity associated with early embryogenesis in the mouse and arrests embryonic development at that stage. Contragestational effects were confirmed in the rat and rabbit. An increase in L-ornithine decarboxylase activity that leads to a rapid increase in putrescine concentration appears to be essential during a critical period after implantation for continued mammalian embryonal growth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fozard, J R -- Part, M L -- Prakash, N J -- Grove, J -- Schechter, P J -- Sjoerdsma, A -- Koch-Weser, J -- New York, N.Y. -- Science. 1980 May 2;208(4443):505-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6768132" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosylmethionine Decarboxylase/metabolism ; Animals ; Carboxy-Lyases/*physiology ; Eflornithine ; Embryo, Mammalian/drug effects/*physiology ; Female ; Gestational Age ; Mice ; Ornithine/*analogs & derivatives/pharmacology ; Ornithine Decarboxylase/*physiology ; Ornithine Decarboxylase Inhibitors ; Polyamines/metabolism ; Pregnancy ; Rabbits ; Rats ; Uterus/drug effects/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 3
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    Normalization of spiroperidol binding in the denervated rat striatum by homologous grafts of substantia nigra (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1983-11-25
    Beschreibung: Transplantation of embryonic substantia nigra into the adult rat brain decreases the motor asymmetry that is produced by dopamine receptor supersensitivity after a unilateral lesion of the substantia nigra. The authors report that this effect of transplantation is specific to grafts of substantia nigra. They also report that, in conjunction with the decrease in motor asymmetry, these grafts cause postsynaptic dopaminergic binding sites to return to normal density as measured by tritiated spiroperidol autoradiography. Thus, in animals with brain lesions, grafts of substantia nigra produce a long-term alteration in the functional status of host brain cell receptors that is associated with a reduction in the behavioral deficit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Freed, W J -- Ko, G N -- Niehoff, D L -- Kuhar, M J -- Hoffer, B J -- Olson, L -- Cannon-Spoor, H E -- Morihisa, J M -- Wyatt, R J -- MH-00289/MH/NIMH NIH HHS/ -- MH-25951/MH/NIMH NIH HHS/ -- NS-09199/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1983 Nov 25;222(4626):937-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6635666" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Apomorphine/pharmacology ; Autoradiography ; Denervation ; Dextroamphetamine/pharmacology ; Motor Activity/drug effects ; Rats ; Rats, Inbred Strains ; Receptors, Dopamine/*metabolism ; Spiperone/metabolism ; Substantia Nigra/*transplantation
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 4
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    Polypeptide transforming growth factors isolated from bovine sources and used for wound healing in vivo (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1983-03-18
    Beschreibung: Transforming growth factors, which are polypeptides that induce the transformed phenotype in nonneoplastic cells, have been isolated in bulk amounts from bovine salivary gland and kidney. In experiments in which wound healing chambers were implanted subcutaneously in the backs of rats, these bovine transforming growth factors accelerated the accumulation of total protein, collagen, and DNA in treated chambers. These studies thus show an effect of an isolated transforming growth factor in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sporn, M B -- Roberts, A B -- Shull, J H -- Smith, J M -- Ward, J M -- Sodek, J -- New York, N.Y. -- Science. 1983 Mar 18;219(4590):1329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6572416" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cattle ; Growth Substances/*isolation & purification/pharmacology ; Kidney/analysis ; Peptides/*pharmacology ; Salivary Glands/analysis ; Transforming Growth Factors ; Wound Healing/*drug effects
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 5
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    Selenium deficiency in cattle associated with Heinz bodies and anemia (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1984-02-03
    Beschreibung: Cattle grazing St. Augustine grass growing on peaty muck soils in the Florida Everglades developed anemia associated with the presence of Heinz bodies and suboptimal concentrations of selenium in blood. Selenium supplementation corrected the anemia, prevented Heinz body formation, increased the body weight of cows and calves, and elevated blood selenium. This may be the first recorded example of widespread anemia in a population due to selenium deficiency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morris, J G -- Cripe, W S -- Chapman, H L Jr -- Walker, D F -- Armstrong, J B -- Alexander, J D Jr -- Miranda, R -- Sanchez, A Jr -- Sanchez, B -- Blair-West, J R -- New York, N.Y. -- Science. 1984 Feb 3;223(4635):491-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691160" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Anemia, Hemolytic/drug therapy/etiology/*veterinary ; Animal Feed ; Animals ; Body Weight ; Cattle ; Cattle Diseases/drug therapy/*etiology ; Heinz Bodies/*ultrastructure ; Hematocrit ; Hemoglobins/analysis ; Selenium/administration & dosage/blood/*deficiency
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 6
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    Morphine in cow and human milk: could dietary morphine constitute a ligand for specific morphine (mu) receptors? (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1981-08-28
    Beschreibung: Morphine has been found in cow and human milk at concentrations of 200 to 500 nanograms per liter. Multistep purification yields a material that has immunological, biological, pharmacological, and chemical properties identical to those of morphine. Similar morphine-like material, which has been tentatively identified in some common plant sources, may be a ubiquitous dietary constituent and a possible source for the material in milk. Since morphine (mu) receptors have a low affinity for enkephalins, and since morphine-like materials have been described in brain and intestine, it is possible that morphine in food may be the source of this material and a normal ligand specific for mu receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hazum, E -- Sabatka, J J -- Chang, K J -- Brent, D A -- Findlay, J W -- Cuatrecasas, P -- New York, N.Y. -- Science. 1981 Aug 28;213(4511):1010-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6267691" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cattle ; Diet ; Female ; Humans ; Ligands ; Milk/*analysis ; Milk, Human/analysis ; Morphine/*analysis/metabolism ; Receptors, Opioid/*metabolism
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 7
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    Mass mortality of harbor seals: pneumonia associated with influenza A virus (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1982-02-26
    Beschreibung: More than 400 harbor seals, most of them immature, died along the New England coast between December 1979 and October 1980 of acute pneumonia associated with influenza virus, A/Seal/Mass/1/180 (H7N7). The virus has avian characteristics, replicates principally in mammals, and causes mild respiratory disease in experimentally infected seals. Concurrent infection with a previously undescribed mycoplasma or adverse environmental conditions may have triggered the epizootic. The similarities between this epizootic and other seal mortalities in the past suggest that these events may be linked by common biological and environmental factors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Geraci, J R -- St Aubin, D J -- Barker, I K -- Webster, R G -- Hinshaw, V S -- Bean, W J -- Ruhnke, H L -- Prescott, J H -- Early, G -- Baker, A S -- Madoff, S -- Schooley, R T -- AI02649/AI/NIAID NIH HHS/ -- AI16841/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 1982 Feb 26;215(4536):1129-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7063847" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Disease Outbreaks/*veterinary ; Influenza A virus/isolation & purification ; Orthomyxoviridae Infections/*veterinary ; Pinnipedia/*microbiology ; Pneumonia/*veterinary ; Seals, Earless/*microbiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 8
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    Variable ultrasound echogenicity in flowing blood (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1982-12-24
    Beschreibung: Real-time ultrasound imaging of large abdominal veins revealed bloodstream echogenicity of variable intensity. This variability is largely due to the entrance and persistance of tributary blood currents that show different echogenicity. Red cell aggregation is probably an important cause of bloodstream echoes and their variable intensity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sigel, B -- Machi, J -- Beitler, J C -- Justin, J R -- Coelho, J C -- New York, N.Y. -- Science. 1982 Dec 24;218(4579):1321-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7146914" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dogs ; Portal Vein/physiology ; *Regional Blood Flow ; *Ultrasonics ; Vena Cava, Inferior/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 9
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    Prenatal exposure to the herbicide 2,4-dichlorophenyl-p-nitrophenyl ether destroys the rodent Harderian gland (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1982-01-15
    Beschreibung: Exposure of mice to the herbicide 2,4-dichlorophenyl-p-nitrophenyl ether during gestation produces abnormalities that are not readily apparent at birth but become obvious as the pups mature. By 2 weeks after birth there are severe intraorbital defects resulting from destruction of the Harderian glands behind the eyes. This effect is noticeable only postnatally because the Harderian gland does not grow or function until after birth.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gray, L E Jr -- Kavlock, R J -- Chernoff, N -- Ferrell, J -- McLamb, J -- Ostby, J -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):293-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053576" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Abnormalities, Drug-Induced/*pathology ; Animals ; Female ; Harderian Gland/abnormalities/*drug effects ; Lacrimal Apparatus/*drug effects ; Male ; Mice ; Phenyl Ethers/*toxicity ; Pregnancy ; Rats ; Thyroxine/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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  • 10
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    Human cell hybrids: analysis of transformation and tumorigenicity (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1982-01-15
    Beschreibung: Intraspecific human-human cell hybrids provide a stable model system with which to investigate the genetic control of transformed and tumorigenic phenotypes. Using this system it has been shown that these phenotypes are under separate genetic control. Furthermore, the tumorigenic phenotype can be complemented by fusion of different tumorigenic cells, resulting in nontumorigenic hybrids. This system also provides information on the control of differentiated function. Molecular cytogenetic techniques should reveal the nature of the chromosomal control of neoplastic transformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stanbridge, E J -- Der, C J -- Doersen, C J -- Nishimi, R Y -- Peehl, D M -- Weissman, B E -- Wilkinson, J E -- CA09054/CA/NCI NIH HHS/ -- CA19401/CA/NCI NIH HHS/ -- GM07134/GM/NIGMS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1982 Jan 15;215(4530):252-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7053574" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Cell Division ; Cell Transformation, Neoplastic/*pathology ; Cell Transformation, Viral ; Cells, Cultured ; Fibronectins/metabolism ; Humans ; *Hybrid Cells/pathology ; Karyotyping ; Mice ; Mice, Nude ; Neoplasms/*genetics/pathology ; Neoplasms, Experimental/pathology ; Phenotype
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
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