[Nature of membrane cellular antigens induced by avian leukosis-sarcoma viruses]

Using the immunofluorescent procedure and cross adsorption tests it was established that the common membrane cellular antigen coded for by avian sarcoma-leukemia virus genome could be found not only in Rous tumours of different animal classes but also in normal chick embryo cells after their propagation in vitro. The nature and function of the discovered antigen are discussed.