title: Electron microscopical observations of psittacine beak and feather disease in an Umbrella cockatoo (Cacatua alba).
abstract: Psittacine beak and feather disease (PBFD) was diagnosed in an umbrella cockatoo (Cacatua alba) with severe feather dystrophy and loss. Electron microscopically, the intranuclear and intracytoplasmic inclusion bodies observed by light microscopy were composed of viral particles forming paracrystalline arrays, whorls, semicircles or concentric circles. Recovered viral particles from the skin and feather follicle tracts were icosahedral and 15 to 20 nm in diameter.
authors.affiliation: Kyoritsu Shoji Laboratories, Inashiki-gun, Ibaraki, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sanada
authors.forename: N
authors.initials: N
authors.lastname: Sanada
authors.forename: M
authors.initials: M
authors.lastname: Kubo
mesh_terms: D000818:Animals; D001502:Beak / Q000473:pathology; D001715:Bird Diseases / Q000473:pathology / Q000821:virology*; D018173:Circoviridae Infections / Q000473:pathology / Q000662:veterinary* / Q000821:virology; D017925:Circovirus / Q000302:isolation & purification / Q000472:pathogenicity / Q000648:ultrastructure*; D005241:Feathers / Q000473:pathology / Q000821:virology; D007181:Inclusion Bodies, Viral / Q000648:ultrastructure; D008264:Macrophages / Q000648:ultrastructure; D008854:Microscopy, Electron / Q000662:veterinary; D011563:Psittaciformes