rectal biopsy specimens from 13 patients who had had crohn 's , disease elsewhere in the bowel , but never in the rectum , showed significant increases in the plasma-cell density in the lamina propria , in the volume of the lamina propria , and in the glucosamine-synthetase activity of the specimens , compared with a control series of patients with the irritable-colon syndrome .
C0193050
rectal biopsy
C0034896
rectum