Endocrine Cell and gut hormo Cell Hormone Gastrin(G) autumn/duodenum Cholecystokinin(CCK) duodenum、 jejunum Secretin duodenum、 jejunum D Somatostatin(SS) Stamoch, duodenum, pancreas, colon Enteroglucagon Small intestine. colon PP Pancreatic polypeptide(PP) pa ECI Substance P(SP) Stamoch, intestine DI VIP Stamoch, intestine, pancreas bombesin Antrum. duodenum PNBAK neurotensin ileum insulin pancreas glucagon pancreas Gastric inhibitory duodenum、 jejunum Mo polypeptide GiP motllin Stamoch. intestine 1313 Cell Hormone Site G Gastrin (G) autrumn, duodenum I Cholecystokinin (CCK) duodenum、jejunum S Secretin duodenum、jejunum D Somatostatin (SS) Stamoch, duodenum, pancreas, colon L Enteroglucagon Small intestine, colon PP Pancreatic polrpeptide (PP) pancreas EC1 Substance P (SP) Stamoch, intestine D1 VIP Stamoch, intestine, pancreas P bombesin Antrum, duodenum N neurotensin ileum B insulin pancreas A glucagon pancreas K Gastric inhibitory polypeptide(GIP) duodenum、jejunum Mo motilin Stamoch, intestine Endocrine Cell and gut hormone