title: Extracutaneous viral inclusions in psittacine beak and feather disease.
abstract: Thirty-five birds that died with naturally acquired psittacine beak and feather disease (PBFD) were necropsied to identify extracutaneous viral inclusions. Inclusions were found in various tissue sections from 34 of 35 birds. By immunoperoxidase staining, intranuclear and intracytoplasmic inclusion bodies were shown to contain PBFD viral antigen. Inclusion-bearing lesions were widely disseminated but often closely associated with the alimentary tract. Lesions within the palate, esophagus, crop, intestine, bursa of Fabricius, and liver probably serve as sources for viral shedding into the feces.
authors.affiliation: Department of Veterinary Pathology, College of Veterinary Medicine, University of Georgia, Athens 30602.
authors.forename: K S
authors.initials: KS
authors.lastname: Latimer
authors.forename: P M
authors.initials: PM
authors.lastname: Rakich
authors.forename: I M
authors.initials: IM
authors.lastname: Kircher
authors.forename: B W
authors.initials: BW
authors.lastname: Ritchie
authors.forename: F D
authors.initials: FD
authors.lastname: Niagro
authors.forename: W L
authors.initials: WL
authors.lastname: Steffens
authors.forename: P D
authors.initials: PD
authors.lastname: Lukert
mesh_terms: D000818:Animals; D001502:Beak / Q000382:microbiology*; D001715:Bird Diseases / Q000382:microbiology*; D001853:Bone Marrow / Q000382:microbiology; D002060:Bursa of Fabricius / Q000382:microbiology; D003426:Crop, Avian / Q000382:microbiology; D004947:Esophagus / Q000382:microbiology; D005241:Feathers; D005243:Feces / Q000382:microbiology; D007150:Immunohistochemistry; D007181:Inclusion Bodies, Viral; D007422:Intestines / Q000382:microbiology; D008099:Liver / Q000382:microbiology; D010159:Palate / Q000382:microbiology; D011563:Psittaciformes; D014777:Virus Diseases / Q000382:microbiology / Q000662:veterinary*