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J Virol. 1970 February; 5(2): 247-257
Copyright © 1970 American Society for Microbiology. All Rights Reserved.

Characteristics of a Virus Isolated from a Feline Fibrosarcoma

Department of Veterinary Pathology, College of Veterinary Medicine, The Ohio State University, Columbus, Ohio 43210

ABSTRACT

A virus was isolated from a radioresistant feline fibrosarcoma. It induced multi-nucleated giant-cell formation and lysis in a cell line derived from a canine fibro-sarcoma, which was used to characterize the virus. End-point titrations in these cells required 28 days. The virus was sensitive to ether and heat and was destroyed at pH 3. Replication was not inhibited by 5-bromodeoxyuridine. Electron microscopy revealed assembly by a budding process from the plasma membrane of infected cells. The average diameter of the virion was 106 nm. Intracisternal particles with an average diameter of 45 nm were present within infected cells. In two instances secondary monolayers of feline renal cells underwent morphological transformation after inoculation of the virus. The two strains of transformed cells are now in continuous culture and do not yield infectious virus.

¹ Present address: Virology Department, Central Veterinary Laboratory, New Haw, Weybridge, Surrey, England.