title: Effectiveness of maternal antibody against challenge with infectious bronchitis viruses.
mesh_terms: D000818:Animals; D002645:Chickens / Q000276:immunology*; D003332:Coronaviridae / Q000276:immunology*; D003333:Coronaviridae Infections / Q000517:prevention & control / Q000662:veterinary*; D003429:Cross Reactions; D007112:Immunity, Maternally-Acquired; D001351:Infectious bronchitis virus / Q000276:immunology*; D009500:Neutralization Tests; D011201:Poultry Diseases / Q000517:prevention & control*