title: Letter: Quantitation of antibodies to infectious bursal disease.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral; D002060:Bursa of Fabricius; D002645:Chickens; D007243:Infectious bursal disease virus / Q000276:immunology*; D011201:Poultry Diseases / Q000276:immunology*; D012087:Reoviridae / Q000276:immunology*; D012088:Reoviridae Infections / Q000276:immunology / Q000662:veterinary*
chemical_list: D000914:Antibodies, Viral