in order to assess the potential role of mu ( mu ) and delta ( delta ) opiate receptors in the central regulation of the cardiovascular and respiratory systems , the cardiovascular and respiratory effects of the relatively selective mu-opioid agonist d-ala2 , mephe4 , gly-ol5 enkephalin ( dago ) and relatively selective delta-agonist d-ala2-d-leu5 enkephalin ( dadl ) were compared following microinjection of these compounds into the nucleus tractus solitarius of pentobarbital-anesthetized rats .
C0525773
dago
C0014298
enkephalin