in the experiments presented here , rats were given intracerebroventricular injections of dynorphin 1-17 ( dyn ) , [ d-ala2mephe4 , -gly-ol5 ] enkephalin ( dago ) , and [ d-ser2 , leu5 ] enkephalin-thr6 ( dslet ) ;
C0525773
dago
C0014298
enkephalin