by using selective ligands of the subclasses of opiate receptor such as [ d-ala2 , d-leu5 ] enkephalin for delta-receptors and ethylketocyclazocine , dynorphin ( 1-17 ) and dynorphin ( 1-8 ) for kappa-receptors , it was possible to show that neither the delta- nor the kappa-opiate receptor was involved in the hyperthermic response .
C0034801
opiate receptor
C0064239
kappa-opiate receptor