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Gastrin, cholecystokinin (cck), and glucose-dependent insulinotropic peptide (gip) are all hormones secreted by __________.

User JoelAZ
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All the hormones above are secreted by the endocrine gland, that is, they move in the blood to their site of action. They are all secreted in the gastrol intestinal (GI) tract.
User Gontard
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These are all hormones secreted by the gastro intestinal tract.
User Publysher
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