Avian Leukosis

**Definition:** A group of transmissible viral diseases of chickens and turkeys. Liver tumors are found in most forms, but tumors can be found elsewhere.

**Tree numbers:** - C01.925.782.815.096 - C01.925.928.120 - C04.557.337.372.216 - C04.619.531.216 - C15.378.508.372.216 - C22.131.094

**Synonyms:** - Leukosis, Avian