Medical Dictionary

lypressin

noun ly·pres·sin \ˌlī-ˈpres-ən\

Medical Definition of LYPRESSIN

:  a vasopressin in which the eighth amino acid residue in its polypeptide chain is a lysine residue (as in pigs) rather than an arginine residue (as in most mammals including humans) and which is used especially as a nasal spray in the control of diabetes mellitus—called also lysine vasopressin; compare arginine vasopressin

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