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Distribution of bovine immunodeficiency virus in the organs of experimentally infected cows
1997
Tajima, M. (Hokkaido Univ., Sapporo (Japan)) | Sato, N. | Kirisawa, R. | Onuma, M. | Maede, Y.
The distribution of bovine immunodeficiency virus (BIV) in the organs of experimentally infected cows was investigated by use of nested polymerase chain reaction (PCR). Two cows (Nos. 1 and 2) experimentally infected with BIV were alive without any clinical symptoms of BIV infection for 28 months. Viral and proviral genomes of BIV were continuously detected from peripheral blood leukocytes in those cows by nested PCR. Proviral genome of BIV were also detected in liver, lung, and spleen cells in the two cows, and in the brain in cow No.1. Viral genomes were detected in liver, lung and spleen cells in cow No.1, and detected only in spleen cells in cow No.2. These results suggest that BIV tended to the persistent in some organs, especially in the spleen
Mostrar más [+] Menos [-]The humoral immune response in cattle after immunization with a multivalent IBR/PI3/ Pasteurella haemolytica A1 leukotoxin vaccine
1997
Odendaal, M.W. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.) | Morris, S. | Du Preez, E. | Aitchison, H.
Predation of livestock ticks by chickens as a tick-control method in a resource-poor urban environment
1997
Dreyer, K. | Fourie, L.J. | Kok, D.J. (Orange Free State Univ., Bloemfontein (South Africa). Dept. of Zoology and Entomology)
Schistosoma mattheei infection in cattle: The course of the intestinal syndrome, and an estimate of the lethal dose of cercariae
1997
Van Wyk, J.A. | Van Rensburg, L.J. | Heitmann, L.P. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.)
Evaluation of a 3 ml heartwater (cowdriosis) infective blood vaccine dose
1997
Combrink, M.P. | De Waal, D.T. | Troskie, P.C. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.)