title: Infectivity and distribution of infectious bursal disease virus in the chicken. Persistence of the virus and lesions.
mesh_terms: D000818:Animals; D002060:Bursa of Fabricius / Q000382:microbiology / Q000473:pathology; D002645:Chickens; D011201:Poultry Diseases / Q000276:immunology / Q000473:pathology*; D013154:Spleen / Q000382:microbiology; D013997:Time Factors; D014776:Virus Cultivation; D014777:Virus Diseases / Q000276:immunology / Q000473:pathology / Q000662:veterinary*; D014713:Viruses, Unclassified / Q000302:isolation & purification / Q000472:pathogenicity*