these observations are compatible with the hypothesis that ( i ) the primary effects of gastrin and pentagastrin on the proximal intestine are as secretogogues and effects on cell proliferation may be secondary , ( ii ) gastrin and pentagastrin at physiological levels do not stimulate small intestinal cell proliferation , however glucagon does , and ( iii ) gastrin at physiological levels and pentagastrin at pharmacological levels may stimulate cell proliferation in the colon .
C0017151
gastrin
C0030859
pentagastrin