Pancreatic and gall bladder functions by means of secretin were studied in 9 patients with peptic ulcer and 7 patients with non-specific ulcerative colitis. In the peptic ulcer patients both pancreatic and gall bladder functions were essentially normal. In the patients with colitis the secretion of proteolytic enzymes by the pancreas was within normal range but a non-functioning gall bladder was found in 4 of the 7 cases. The significance of these findin...
