title: Presence in unprimed mice of helper T cells specific for antigens closely related to self and their possible relevance to tumor immunology.
mesh_terms: D000818:Animals; D000954:Antigens, Surface; D002478:Cells, Cultured; D003602:Cytotoxicity, Immunologic; D006183:H-2 Antigens; D007518:Isoantibodies; D007519:Isoantigens / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D009369:Neoplasms / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000954:Antigens, Surface; D006183:H-2 Antigens; D007518:Isoantibodies; D007519:Isoantigens; C029805:Lyt antibodies