Radioimmunoassay of type D oncovirus from continuous J-96 cells.

Radioimmunoassay of J-96 virus and an extract of J-96 cells in the homologous and heterologous systems aimed at detecting antigenic determinants of p25 of Mason-Pfizer virus, as well as group-specific and interspecies antigenic determinants p30 of Rauscher leukaemia virus demonstrated that (1) J-96 virus contains a major internal protein immunologically identical with p25 protein of Mason-Pfizer virus based on the antigenic determinants detectable by the radioimmunoassay used; and (2) no interspecies antigenic determinants characteristic of the major internal protein of mammalian type C viruses were detectable in the J-96 virus or the J-96 cell extract.