Results 211 to 220 of about 129,705 (270)
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Sperm autoantibodies in vasectomized rats of different inbred strains.
Science, 1977An immune response to antigens of spermatozoa occurs after vasectomy in rats of some inbred strains, but not in others. Antibodies to rat spermatozoa were detected by indirect immunofluorescence in some of the serums of vasectomized rats of the following strains: 80 percent of Lewis, 47 percent of Brown Norway, 13 percent of Buffalo, 12 percent of ...
P. Bigazzi, L. L. Kosuda, L. L. Harnick
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LITTER SIZES IN INBRED STRAINS OF RATS (RATTUS NORVEGICUS)
International Journal of Immunogenetics, 1979SummaryThe average litter sizes and reproductive performance of twenty‐five inbred strains of rats, maintained in a conventional colony in Pittsburgh, and twenty‐six inbred strains, maintained in a barrier facility at the National Institutes of Health, were calculated from data collected for periods of 3 and 10 years, respectively.
T. Gill, H. Kunz, C. T. Hansen
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Variations in catechol-O-methyltransferase activity in inbred strains of rats
Neuropharmacology, 1977Abstract Catechol-O-methyltransferase (COMT) activity was measured in nine strains of rats aged 9 to 11 weeks. Hepatic COMT activity levels in Sprague-Dawley and Fischer 344 animals varied from 48% to 66% of those in livers of the other strains studied.
R. Weinshilboum, F. Raymond
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Strain differences of the light-dark preference in inbred rats [PDF]
Behavior Genetics, 1989 The present study examined strain differences in the light-dark preference among four strains of rats. The test was done in the home-cage situation under 12L:12D cycles. Data from four strains were compared: BN/Kyo, BDIX/Nem, Wistar/Nu, and F344/NSlc.
Miki Matsuo, Keiichiro Tsuji
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Phylogenetics of rat inbred strains
Mammalian Genome, 2003Laboratory rats (Rattus norvegicus) have played animportant role in biomedical research for over 100years with more than 200 strains bred as physiologi-cal models of human disease (Lindsey 1979; Steenet al. 1999; Kwitek-Black and Jacob 2001). Unlikemouse inbred strains, little is known about rela-tionships among rat strains (Festing 1979).
Peter J. Tonellato +4 more
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Spontaneous Thymoma in an Inbred Strain of Rat 2
JNCI: Journal of the National Cancer Institute, 1977Thymomas that appear with high frequency in inbred WAB rats living into old age were examined. The spontaneous thymomas described were discrete, encapsulated bodies composed of lymphocytes and epithelial cells, with a predominance of lymphocytes. The rat neoplasms resembled the human thymomas, and their rate of incidence in older animals may suggest ...
S.M. Hinsull, D. Bellamy
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Energy balance in an inbred strain of rats: Comparison with the wistar strain
Physiology & Behavior, 1994Food intake and body weight gain were examined in two groups of male rats (7 weeks): an inbred strain, Dark Agouti (DA, n = 12) and a noninbred strain, Wistar (n = 13). The animals were allowed to select their diet from separate sources of the three macronutrients protein, fat, and carbohydrate.
Larue-Achagiotis, C. +3 more
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Behavioral and neurochemical differences in an inbred strain of rats
Physiology & Behavior, 1990The spontaneous motility of 75 Sprague-Dawley rats obtained from an inbred strain was found to vary widely. To test the hypothesis that heterogeneity in motility is accompanied by heterogeneity in neurochemical and vegetative function variables, the median motility score was used to divide the animals into high and low motility groups.
H.B. Udaya, N. Pradhan, S. Arunasmitha
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Variation in haematological parameters among inbred strains of rat
Laboratory Animals, 1981Haematological determinations were carried out on 7 inbred strains of rats using a standardized procedure. Significant genetic variation was found for many of the parameters although none of the strains had values which could be termed pathological. Measurements also varied significantly from day to day. Factorial analysis of variance is shown to be a
D. P. Lovell +3 more
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