title: Aetiology of ulcerative colitis.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens; D001327:Autoimmune Diseases / Q000209:etiology; D003093:Colitis, Ulcerative / Q000201:enzymology / Q000209:etiology* / Q000276:immunology / Q000382:microbiology / Q000503:physiopathology; D004748:Entamoeba histolytica / Q000302:isolation & purification; D006801:Humans; D006969:Hypersensitivity, Immediate; D007413:Intestinal Mucosa / Q000201:enzymology; D007511:Ischemia; D008297:Male; D008892:Milk; D009113:Muramidase / Q000032:analysis
chemical_list: D000941:Antigens; D009113:Muramidase