title: Isolation of a papovavirus-like agent from young budgerigars with feather abnormalities.
mesh_terms: D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D001715:Bird Diseases / Q000209:etiology* / Q000473:pathology; D001717:Birds; D005241:Feathers / Q000473:pathology*; D027383:Papillomaviridae / Q000302:isolation & purification*; D027382:Polyomaviridae
chemical_list: D000956:Antigens, Viral