title: Letter: HL-A antigens in inflammatory bowel disease.
mesh_terms: D003093:Colitis, Ulcerative / Q000276:immunology; D003424:Crohn Disease / Q000276:immunology*; D006649:Histocompatibility Antigens / Q000032:analysis* / Q000302:isolation & purification; D006801:Humans
chemical_list: D006649:Histocompatibility Antigens