Demonstration of an Antigenic Relationship Between Hog Cholera and Bovine Viral Diarrhea Viruses by Immunofluorescence.

Specific staining of antigen within bovine embryo kidney tissue culture cells, infected with either Oregon C24V or NADL-MD bovine viral diarrhea virus, was accomplished using fluorescein-conjugated swine anti-hog cholera or bovine antiviral diarrhea globulin. Also specific staining of antigen within pig kidney tissue culture cells, infected with hog cholera virus, was accomplished using the same two types of conjugates. Specificity was confirmed by appropriate controls. The authors found immunofluorescence to be a convenient and sensitive method for determining an antigenic relationship between hog cholera and bovine viral diarrhea viruses.