we utilized 3h- [ d-ala2 , d-leu5 ] enkephalin ( dadl ) in the presence of 10 nm dago to label delta sites and 3h-ethylketocyclazocine ( ekc ) in the presence of 100 nm dadl + 100 nm [ d-ala2 , mephe4 , met ( 0 ) ol5 ] enkephalin to detect kappa receptors .
C0525773
dago
C0014298
enkephalin