Alpharetrovirus

**Definition:** A genus of the family RETROVIRIDAE with type C morphology, that causes malignant and other diseases in wild birds and domestic fowl.

**Tree numbers:** - B04.613.807.070 - B04.820.650.070

**Synonyms:** - Avian Leukosis-Sarcoma Viruses - Type C Avian Retroviruses - Retroviruses Type C, Avian - Retroviruses, ALV-Related