title: Studies on avian infectious bronchitis virus in New Zealand. I. Serotypes.
mesh_terms: D000818:Animals; D002645:Chickens; D003332:Coronaviridae / Q000145:classification*; D003333:Coronaviridae Infections / Q000276:immunology / Q000662:veterinary*; D001351:Infectious bronchitis virus / Q000145:classification* / Q000276:immunology; D009520:New Zealand; D011201:Poultry Diseases / Q000276:immunology*