Rectal biopsy in ulcerative colitis and regional enteritis.
D001706:Biopsy; D003092:Colitis; D003093:Colitis, Ulcerative / Q000473:pathology*; D003424:Crohn Disease / Q000473:pathology*; D006801:Humans; D007079:Ileitis; D007422:Intestines
COLITIS, ULCERATIVE/pathology; ILEITIS, REGIONAL/pathology