
Keywords: AIDS; acquired immunodeficiency syndrome; BKV; polyomavirus BK; BVDV; bovine viral diarrhea virus; EBTr; embryonic trachea tissue; EBV; Epstein-Barr virus; HBV; hepatitis B virus; HCMV; human cytomegalovirus; HCV; hepatitis C virus; HHV; human herpesvirus