Avian Sarcoma Viruses

**Definition:** Group of alpharetroviruses (ALPHARETROVIRUS) producing sarcomata and other tumors in chickens and other fowl and also in pigeons, ducks, and RATS.

**Tree numbers:** - B04.613.807.070.120 - B04.820.650.070.120

**Synonyms:** - Sarcoma Viruses, Avian