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Medical Dictionary


noun leu·cine–en·keph·a·lin \ˈlü-ˌsēn-en-ˈkef-ə-lən\

Medical Definition of leucine–enkephalin

  1. :  a pentapeptide having a terminal leucine residue that is one of the two enkephalins occurring naturally in the brain—called also Leu-enkephalin

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