title: Studies on a paramyxovirus isolated from Japanese sparrow-hawks (Accipiter virgatus gularis). II. Serology and pathogenesis in chickens.
mesh_terms: D000818:Animals; D001717:Birds / Q000382:microbiology*; D002645:Chickens; D009522:Newcastle disease virus / Q000276:immunology; D010252:Paramyxoviridae / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity*; D011201:Poultry Diseases / Q000209:etiology*