enkephalin(redirected from encephalins)
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Either of two closely related pentapeptides having opiate qualities and occurring in the brain, spinal cord, and other parts of the body.
(Biochemistry) a chemical occurring in the brain, having effects similar to those of morphine. See also endorphin
en•keph•al•in(ɛnˈkɛf ə lɪn)
either of two polypeptides that bind to morphine receptors in the central nervous system and have opioid properties of relatively short duration. Compare endorphin.