dopamine d-1 receptor-stimulated cyclic amp efflux from superfused rat neostriatal slices was strongly inhibited by the delta-opioid receptor agonist , [ d-pen2 , d-pen5 ] enkephalin ( dpdpe , 1 microm ) , and by the mu-opioid receptor agonist , [ d-ala2 , mephe4 , gly-ol5 ] enkephalin ( dago , 1 microm ) .
C0014298
enkephalin
C0525773
dago