Labels:screenshot | text | black | black and white | monochrome OCR: uced by PP PP is a thirty-six amino-acid peptide pro ets of or F cells that are found mainly in the is h the Langerhans but are also scattered throug exocrine pancreas. It was first isolated as asulin contaminant during the purification of i siological from the pancreas. It has no obvious phy ons, PP is afunction. At pharmacological concentra , pancreaticweak inhibitor of gallbladder contraction eased into secretion, and gastric acid output. It is re se to the circulation after meals, and in respor vagus andactivation of cholinergic nerves from the CCK. to pancreatic exocrine stimulants such a
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