vasoactive intestinal peptide and impure cholecystokinin-pancreozymin ( but not the 99 % pure preparation or pure cholecystokinin octapeptide ) were potent stimuli , but pentagastrin , glucagon , secretin , and gastric inhibitory peptide were impotent .
C0008328
cholecystokinin-pancreozymin
C0037167
cholecystokinin octapeptide