the ability of specific agonists of opiate mu- , delta- , kappa- and sigma-receptors : morphine , d-ala2 , d- ley5 -enkephalin ( dadl ) , bremazocine , skf 10,047 used separately and jointly as well as of met-enkephalin and naloxone , to modify habituation of orthodromic evoked potential ( ep ) in the turtle 's visual cortex was studied .
C0014298
enkephalin
C0014295
met-enkephalin