Distribution of cytopathogenic and noncytopathogenic bovine virus diarrhea virus in tissues from a calf with experimentally induced mucosal disease using antigenic and genetic markers.

A comparative analysis of the distribution of cytopathogenic (cp) and noncytopathogenic (ncp) bovine virus diarrhea disease (BVD) virus in tissues from a calf with experimentally induced mucosal disease was performed using immunohistology and polymerase chain reaction after reverse transcription (RT-PCR) of viral RNA. For immunohistology, an antigenic marker on the superinfecting cp BVD virus defined by a monoclonal antibody (mab) was used, and overall presence of antigen was assessed with a pestivirus specific mab. The primers selected for RT-PCR detected the genomic insertion in the p125 region of the superinfecting cp BVD virus. Both methods gave consistent results.