prior to autoradiographic visualization of mu binding sites , [ 3h ] oxymorphone , [ 3h ] d-ala2-mephe4 , gly-ol5-enkephalin ( dago ) , and [ 125i ] d-ala2-me-phe4-met ( o ) -ol ] enkephalin ( fk33824 ) were shown to selectively label mu binding sites using slide mounted sections of molded minced rat brain .
C0525773
dago
C0014298
enkephalin