title: Infectious bronchitis: detection of viral antigen in eggs and antibodies in chicken serum by complement-fixation.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis*; D000917:Antibody Formation; D000956:Antigens, Viral / Q000032:analysis*; D001991:Bronchitis / Q000276:immunology / Q000662:veterinary*; D002645:Chickens; D003168:Complement Fixation Tests; D003332:Coronaviridae / Q000254:growth & development / Q000276:immunology*; D004531:Eggs; D005321:Extraembryonic Membranes; D011201:Poultry Diseases / Q000276:immunology*; D014777:Virus Diseases / Q000276:immunology / Q000662:veterinary*
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral