[A new antigen induced by oncornavirus D in mouse fibroblast culture].

It was established by the CFT and immunofluorescence that oncornavirus D inoculated into continuous mouse fibroblast cultures induced in them a new antigen differing from those of the virus and of the original non-infected cells. The antigen was shown to accumulate during cultivation of the infected cells. No antigen was induced by oncornavirus inactivated by heating or neutralized by antiviral antiserum. The physico-chemical and immunological properties of the new antigen experimentally induced in the mouse fibroblast culture are identical to those of the new antigen present in cultures of human J-96, HeLa and HEp-2 cells.