Murine Leukemia Viruses: Antigenic Studies by Quantitative Complement Fixation
Paul Gerber 1,
Timothy E. O'Connor 1, and
Suzette M. Birch 1
1 Division of Biologic Standards and National Cancer Institute, National Institutes of Health, Bethesda, Maryland
The murine leukemia viruses of Rauscher and Friend, derived from plasnma of infected Balb/c mice, was purified. Their antigenic relationship was studied by quantitative complement-fixation reactions with the virion antigen and homologous antiserums. The complement-fixation curves observed in cross-reactions indicated close antigenic similarity between these two leukemia viruses. Highly purified viral preparations contained detectable amounts of host antigens.