title: [Self-nonself discrimination].
mesh_terms: D000818:Animals; D005802:Genes, MHC Class II; D000949:Histocompatibility Antigens Class II / Q000276:immunology*; D006801:Humans; D008285:Major Histocompatibility Complex; D051379:Mice
chemical_list: D000949:Histocompatibility Antigens Class II