title: Ia antigenic specificities: definition of human system and relevance to immune responses.
mesh_terms: D000818:Animals; D000954:Antigens, Surface / Q000032:analysis; D006084:Graft Rejection; D006801:Humans; D007518:Isoantibodies / Q000032:analysis*; D007519:Isoantigens / Q000032:analysis* / Q000235:genetics; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D009374:Neoplasms, Experimental / Q000276:immunology; D012397:Rosette Formation; D016038:Skin Transplantation
chemical_list: D000954:Antigens, Surface; D007518:Isoantibodies; D007519:Isoantigens