saturation binding studies with [ 3h ] -ethylketocyclazocine ( [ 3h ] -ekc ) were performed at 37 degrees c for 30 min in the presence of [ d-ala2 , me-phe4 , gly-ol5 ] -enkephalin ( dago ) and [ d-ser2 , thr6 ] -leu-enkephalin ( dslet ) , two specific ligands for crossreacting mu and delta opioid receptors , respectively .
C0014298
enkephalin
C0014294
leu-enkephalin