Results 251 to 260 of about 162,987 (311)

Ganglioneuromas in hamsters

Acta Neuropathologica, 1975
A description is given of three cases of ganglioneuromas, which originated from ganglia of the sympathetic chain of hamsters. Other reports of such tumors in this species are reviewed and the literature relative to hamster ganglioneuromas presented. In addition, the possible genesis of origin from adult ganglion cells upon the action of carcinogenic ...
M, Rustia, A, Cardesa
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Effects of aflatoxin on pregnant hamsters and hamster foetuses

Journal of Comparative Pathology, 1980
Abstract Pregnant hamsters were given 4 or 6 mg per kg crystalline aflatoxin B 1 by i.p. injection on days 8 and 9 of pregnancy. Foetuses were examined for gross and/or histological lesions on days 11 and 15. Aflatoxin, at both doses, caused primarily foetal growth retardation.
R E, Schmidt, R J, Panciera
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CARDIOMYOPATHY OF HAMSTER DYSTROPHY

Annals of the New York Academy of Sciences, 1979
Investigations of the fine structural changes observed in the hearts of cardiomyopathic hamsters at very early stages of the disease indicate that the initial changes involve the pericapillary mesenchymal cells. Other prominent features consist of hypercontraction of cardiocytes, disruption of intercalated disks, and eventual partitioning of cardiac ...
G, Jasmin, H Y, Eu
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Transplantation of hamster buccal pouch carcinoma to neonatal hamsters

Oral Surgery, Oral Medicine, Oral Pathology, 1979
Epidermoid carcinomas of oral mucosa were induced with DMBA in the buccal pouches of hamsters. The well-differentiated primary tumors were allografted into the peritoneal cavities of neonatal hamsters that had been treated with antilymphocyte serum. Solid tumors grew rapidly in the peritoneum and were harvested 6 to 31 days postimplantation.
L P, Merk, G, Shklar, J, Albright
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RU486 is not an antiprogestin in the hamster

Journal of Steroid Biochemistry, 1987
The biological activity and progestin receptor binding activity of the synthetic steroid RU486 (RU38486; 17-beta-hydroxy-11-beta-(4-dimethylaminophenyl)-17-alpha-(1-propynl++ +)- estra-4,9-diene-3-one) were investigated in the hamster. RU486 demonstrated no antiprogestational activity in the female hamster in that it was ineffective in blocking ...
G O, Gray, W W, Leavitt
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Immunity to toxoplasmosis in hamsters

American Journal of Veterinary Research, 1984
SUMMARY Protective immunity to Toxoplasma was studied in hamsters. Immunity developed in 2 to 3 weeks after vaccinations were performed. Vaccination with live RH, T-45, and ts-4 strains afforded the best protection against challenge exposure with the most pathogenic RH strain used, Even a killed-toxoplasma vaccine protected all hamsters against the ...
M R, Elwell, J K, Frenkel
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Assay of Gonadotropin in the Hamster

Endocrinology, 1964
Doses of gonadotropin (HCG) ranging from 0.25 to 20 IU were injected subcutaneously into immature male hamsters daily for 5 days. The increase in weight of the sex accessory glands was used as the end point of the assay. Representative samples of the tissue were fixed in Bouin’s fluid and examined histologically.
B L, CASTLE, A L, SODERWALL
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Plasmalogenase in hamster heart

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1985
In this study, the presence of plasmalogenase for the hydrolysis of the alk-1-enyl bond at the C-1 position of 1-alkenyl-2-acyl-sn-glycero-3-phosphoethanolamine (ethanolamine plasmalogens) in the hamster heart was examined. A new spectrophotometric assay was developed for this study, in which the aldehyde released by the hydrolysis of the plamalogenase
G, Arthur, L, Covic, M, Wientzek, P C, Choy   +3 more
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Experimental cryptosporidiosis in hamsters

Journal of Clinical Microbiology, 1990
A new laboratory animal model for experimental cryptosporidiosis is described. Adult immunosuppressed hamsters were infected per os with 0.5 x 10(5) and 1 x 10(5) Cryptosporidium oocysts of calf origin. The mean numbers of oocysts shed per gram of feces per day and the patterns of infection are described. The susceptibility to Cryptosporidium infection,
P, Rossi, E, Pozio, M G, Besse, M A, Gomez Morales, G, La Rosa   +4 more
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