The value of rectal biopsy in the diagnosis of ulcerative colitis.
D001706:Biopsy; D003092:Colitis; D003093:Colitis, Ulcerative / Q000175:diagnosis*; D006801:Humans; D007422:Intestines; D012007:Rectum / Q000473:pathology*
BIOPSY; COLITIS, ULCERATIVE/diagnosis; RECTUM/pathology