title: Persistence of infectious bursal disease virus in experimentally infected chickens.
mesh_terms: D000818:Animals; D002645:Chickens; D007243:Infectious bursal disease virus / Q000302:isolation & purification*; D011201:Poultry Diseases / Q000382:microbiology*; D012087:Reoviridae / Q000302:isolation & purification*; D012088:Reoviridae Infections / Q000382:microbiology*