regional values for contact angle were as follows : gastric body 70 degrees , antrum 70 degrees , duodenal bulb 62 degrees ( p less than 0.01 vs. stomach ) , distal duodenum 50 degrees ( p less than 0.001 vs. stomach and p less than 0.01 vs. bulb ) , and rectum 57 degrees ( p less than 0.001 vs. stomach ) .
C0227230
gastric
C0038351
stomach