title: Properties of the infectious bursal agent of chicken (IBA).
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000382:microbiology*; D002642:Chick Embryo; D002645:Chickens; D005321:Extraembryonic Membranes; D008854:Microscopy, Electron; D011201:Poultry Diseases / Q000382:microbiology*; D012087:Reoviridae / Q000302:isolation & purification*; D012088:Reoviridae Infections / Q000196:embryology / Q000662:veterinary*; D014461:Ultracentrifugation