title: Antigenic variation in strains of avian infectious bronchitis virus.
mesh_terms: D000256:Adenoviridae / Q000276:immunology; D000818:Animals; D000941:Antigens / Q000032:analysis*; D001991:Bronchitis / Q000382:microbiology / Q000662:veterinary; D002642:Chick Embryo; D002645:Chickens; D003429:Cross Reactions; D004739:England; D007106:Immune Sera; D009500:Neutralization Tests; D011201:Poultry Diseases / Q000382:microbiology; D012703:Serotyping; D013045:Species Specificity; D014776:Virus Cultivation; D014713:Viruses, Unclassified / Q000145:classification / Q000276:immunology* / Q000302:isolation & purification
chemical_list: D000941:Antigens; D007106:Immune Sera