to investigate the role of opioids in regulating cardiovascular function , we administered delta-opioid receptor agonists d-ala-d-leu enkephalin ( dadle ) and d-ala-met enkephalinamide ( dame ) , and mu-opioid receptor agonist , a morphiceptin analogue ( ma ) , intracisternally in 13 unanesthetized , chronically instrumented adult dogs in 2 doses ( 25 and 125 micrograms/kg ) .
C0014294
leu enkephalin
C0079286
dadle