vasoactive intestinal peptide
vasoactive intestinal polypeptide
Medical Definition of vasoactive intestinal peptide
: a protein hormone that consists of a chain of 28 amino acid residues, was first isolated from the gut of the pig, has been implicated as a neurotransmitter, and has a wide range of physiological activities (as stimulation of secretion by the pancreas and small intestine, vasodilation, and inhibition of gastric juice production)—abbreviation VIP
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