Association of Mouse Major Histocompatibility and Rauscher Murine Leukaemia Virus Envelope Glycoprotein Antigens on Leukaemia Cells and their Recognition by Syngeneic Virus‐Immune‐Cytotoxic T‐Lymphocytes

Physical association was measured between MLV gp70, the envelope glycoprotein of Rauscher murine leukaemia virus (R‐MLV), and serologically defined H‐2 antigens on the surface of R‐MLV transformed C57BL/6 (H‐2D^bk^b) mouse leukaemia cells (RBL‐5A). Capping and patching with antisera against H‐2D^b caused specific co‐capping and co‐patching of R‐MLV gp70 antigens as seen by fluorescence microscopy. Despite the physical proximity of R‐MLV gp70 and H‐2D^b antigens, high titre αR‐MLV gp70 sera had no effect in blocking syngeneic T‐lymphocyte mediated cytolysis of RBL‐5A cells whereas αaH‐2D^b sera were effective.