title: Pathogenesis of ulcerative colitis.
mesh_terms: D000328:Adult; D000368:Aged; D003093:Colitis, Ulcerative / Q000209:etiology*; D006801:Humans; D007413:Intestinal Mucosa / Q000098:blood supply; D007511:Ischemia / Q000209:etiology; D008875:Middle Aged