title: Destruction of lymphocytes by a virulent avian influenza A virus.
abstract: Infection of chickens by a virulent avian influenza A virus, A/turkey/Ont/7732/66 (H5N9), was associated with a severe lymphopenia. High titres of infectious virus were found in lymphoid tissues early in infection and were accompanied by severe damage to the lymphocyte populations as demonstrated by histopathological examination. Non-lymphoid cell populations in these tissues were unaffected, as were other organs examined. The viral nucleoprotein was localized by immunoperoxidase staining to lymphocytes in affected tissues early in infection.
authors.affiliation: Department of Pathobiological Sciences, School of Veterinary Medicine, University of Wisconsin-Madison 53706.
authors.forename: H
authors.initials: H
authors.lastname: Van Campen
authors.forename: B C
authors.initials: BC
authors.lastname: Easterday
authors.forename: V S
authors.initials: VS
authors.lastname: Hinshaw
mesh_terms: D000818:Animals; D002645:Chickens; D009980:Influenza A virus / Q000302:isolation & purification / Q000472:pathogenicity*; D005585:Influenza in Birds / Q000382:microbiology / Q000473:pathology; D008214:Lymphocytes / Q000382:microbiology / Q000473:pathology; D008221:Lymphoid Tissue / Q000382:microbiology / Q000473:pathology; D008231:Lymphopenia / Q000382:microbiology / Q000473:pathology / Q000662:veterinary*; D009336:Necrosis; D013997:Time Factors; D014774:Virulence