title: Letter: Reoviruses from chickens with hydropericardium.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D002645:Chickens; D003588:Cytopathogenic Effect, Viral; D006321:Heart / Q000382:microbiology; D008854:Microscopy, Electron; D010490:Pericardial Effusion / Q000382:microbiology / Q000662:veterinary*; D011201:Poultry Diseases / Q000382:microbiology*; D012087:Reoviridae / Q000302:isolation & purification*