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An infant northern fur seal (Callhorinus ursinus) died in a rookery on St. Paul Island, Pribilof Islands, Alaska. Grossly, slight enlargement of the mesenteric lymph nodes was seen. Microscopically, a lymphosarcoma composed of sheets of monomorphic lymphoid cells in sections of lymph node and tonsil was seen. Electron microscopy of formalin-fixed tissues revealed several structures that were possible of viral origin in the cytoplasm of the neoplastic cells.
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S. J. Newman and S. A. Smith Marine mammal neoplasia: a review. Vet. Pathol., November 1, 2006; 43(6): 865 - 880. [Abstract] [Full Text] [PDF] |
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