Authors encountered a case of bovine viral leukosis in a young cattle (10 months old) with the following findings;
Main clinical symptoms observed were emaciation, digestive disorder, and marked enlargement of superficial lymph nodes. Biopsied specimen of the lymph nodes revealed characteristic histological picture of bovine leukosis.
A severe degree of leukocytosis (108,000/㎝) accompanied by marked lympocytosis (96%=103,680/㎝m) was detected from the hematological examination of peripheral blood. Most of the lympocytes(94%= 101,520) were large-sized, immature, and abnormal in their morphology.
In addition, a pronounced anemia (1.78 million/㎝m) without regenerative evidence of erythrocyte was noted.
The serum of the patient showed positive reaction against gp antigen of bovine leukosis virus in agargel diffusion test.
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