title: Isolation of two subgroup-specific leukemogenic viruses from standard avian myeloblastosis virus.
abstract: Two populations of virus having subgroup-specific homogeneity (A and B) were isolated from standard avian myeloblastosis virus stocks by passage in vivo through genetically defined chickens. Each possesses leukemogenic activity in vivo. Other properties and potential usefulness of these agents are discussed.
mesh_terms: D000818:Animals; D001354:Avian Leukosis Virus / Q000302:isolation & purification*; D009189:Avian Myeloblastosis Virus / Q000302:isolation & purification*; D002471:Cell Transformation, Neoplastic; D002645:Chickens; D014762:Viral Interference