Sarcoma Viruses, Feline

**Definition:** Species of GAMMARETROVIRUS isolated from fibrosarcoma in cats. The viruses are actually recombinant feline leukemia viruses (FeLV) where part of the genome has been replaced by cellular oncogenes. It is unique to individuals and not transmitted naturally to other cats. FeSVs are replication defective and require FeLV to reproduce.

**Tree numbers:** - B04.265.590 - B04.613.807.375.800 - B04.820.650.375.800

**Synonyms:** - Feline Sarcoma Viruses