Colonic biopsy: a new technique.
D001707:Biopsy, Needle / Q000379:methods; D012809:Colon, Sigmoid / Q000000981:diagnostic imaging; D003108:Colonic Diseases / Q000175:diagnosis*; D003113:Colonoscopy; D005336:Fiber Optic Technology; D006801:Humans; D011859:Radiography