Abstract
Twenty-one monoclonal antibodies (MAbs) directed against the NY-1 and the Osloss-c strains of bovine viral diarrhoea virus were produced and characterized by indirect immunofluorescence assay, radioimmuno-precipitation and neutralization tests. Fourteen MAbs directed against the NY-1 strain recognized the gp48 and showed a weak neutralizing activity in the presence of goat anti-mouse immunoglobulin serum.