another group of rats given identical exposure to the fluids had their brains prepared for measuring opiate receptor binding using the delta-receptor ligand [ 3h ] d-ala-d-leu-enkephalin ( [ 3h ] dadle ) and the mu-receptor selective ligand [ 3h ] tyr-d-ala-gly-mephe-gly-ol ( [ 3h ] dago ) .
C0014294
leu-enkephalin
C0079286
dadle