C-Type Tumor Virus Particles in Salivary Tissue of Domestic Cats

Summary

C-type RNA tumor virus particles were observed by electron microscopy in the submaxillary gland, parotid gland, and bone marrow tissues from almost every domestic cat with spontaneous fymphoma and fibrosarcoma induced by feline sarcoma virus. C-type particles were less f.requent in these tissues from cats with severe cnemic, spontaneous sorcoma, or infectious peritonitis and were not seen in normal cats. Whether this finding is significant in the propagation and natural spread of this virus is unknown.