the above findings , as well as supportive data in the literature , indicate that the duodenal bulb and the gastric antrum , which are resected in the whipple procedure and are kept in the pylorus-preserving operation , seem to play important roles in the gut hormonal release and that the pylorus-preserving operation is the superior surgical technique in terms of gastrin and secretin release .
C0034193
gastric antrum
C0034196
pylorus