using the ed50 and the first three stimuli as control , the effects of morphine ( 10 nmol/l-l mmol/l ) , d-ala2-mephe4-met-enkephalin- ( o5 ) -ol ( damme ; 10 nmol/l-0.1 mmol/l ) and naloxone ( 10 nmol/l-10 mumol/l ) on the response to the next three stimuli were compared .
C0014295
met-enkephalin
C0949300
damme