title: Germinal centre localization of bovine viral diarrhoea virus in persistently infected animals.
abstract: Immunohistochemical analysis of peripheral lymph nodes from gnotobiotic calves persistently infected with bovine viral diarrhoea virus (BVDV) revealed extensive deposition of E(rns) and localization of the viral genome in the light zone of germinal centres. Viral antigen co-localized with immunoglobulin in the germinal centres and was shown to be extracellular. Despite the presence of viral antigen in germinal centres, circulating anti-BVDV antibody was not detected. These findings provide evidence that calves persistently infected with BVDV, in the absence of adventitious infection, can generate a B cell response to the persisting virus. The nature of the tolerance in calves persistently infected with BVDV is discussed in light of these findings.
authors.affiliation: Institute for Animal Health, Compton, Newbury RG20 7NN, UK.
authors.forename: M D
authors.initials: MD
authors.lastname: Fray
authors.forename: E A
authors.initials: EA
authors.lastname: Supple
authors.forename: W I
authors.initials: WI
authors.lastname: Morrison
authors.forename: B
authors.initials: B
authors.lastname: Charleston
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000032:analysis; D000956:Antigens, Viral / Q000032:analysis; D001912:Bovine Virus Diarrhea-Mucosal Disease / Q000821:virology*; D002417:Cattle; D018858:Germinal Center / Q000821:virology*; D007150:Immunohistochemistry; D008198:Lymph Nodes / Q000821:virology; D010576:Pestivirus / Q000302:isolation & purification*
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral