the in vivo binding properties of cerebral mu and delta opioid receptors were investigated in mice after the intrastriatal injection of [ 3h ] [ d-ala2 , mephe4 , gly-ol5 ] enkephalin ( dago ) or [ 3h ] [ d-thr2 , leu5 ] enkephalyl-thr ( dtlet ) .
C0014298
enkephalin
C0525773
dago