Spontaneous Systemic Lymphosarcoma in a sheep

Spontaneous neoplasms in sheep with report of cases of melanoma, mesothelioma and lymphosarcoma

spontaneous neoplasms in sheep with report of cases of melanoma, mesothelioma and lymphosarcoma

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Pathology of lymphosarcoma in sheep induced with bovine leukemia virus.

Sixty-nine sheep were infected with bovine leukemia virus from bovine lymphosarcoma materials. Twenty-four developed lymphosarcoma and died from 13 to 66 (average, 29) months later. Circulating lymphocytes were increased to leukemia levels (70,000 to 403,000/cu mm blood) in only eight sheep within 2 to 3 months of death. Various lymph nodes and visceral organs including heart, abomasum, uterus,...

Spontaneous Listeric Encephalitis in Sheep

The brainstems of four sheep with spontaneous listeric encephalitis had scattered small foci of inflammatory cells (neutrophils or macrophages, or both) with scattered fragments of degenerating nerve fibers and glial cells. In extensive areas of malacia in the pons and medulla oblongata, there was loss of parenchyma with massive accumulation of macrophages, a few neutrophils, lymphocytes and pl...

Spontaneous Motor Activity in the Fetal Sheep