title: A direct complement fixation test for infectious bronchitis virus using heat-inactivated chicken sera.
mesh_terms: D000818:Animals; D001991:Bronchitis / Q000175:diagnosis / Q000662:veterinary*; D002645:Chickens; D003168:Complement Fixation Tests; D006168:Guinea Pigs; D006358:Hot Temperature; D011201:Poultry Diseases / Q000175:diagnosis*; D011817:Rabbits; D012756:Sheep; D014777:Virus Diseases / Q000175:diagnosis / Q000662:veterinary*