Nature of the tissue reaction in ulcerative colitis. Light and electron microscopic findings.
D001706:Biopsy; D003093:Colitis, Ulcerative / Q000175:diagnosis* / Q000473:pathology*; D003424:Crohn Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D012007:Rectum / Q000473:pathology*