while morphine sulfate ( 4 mg/kg s.c. ) roughly doubled brain trph activity and tissue 5-hiaa 40 min after injection , pretreatment with cck-8 ( 5 micrograms/kg i.p. , 10 min prior to morphine ) completely abolished this neurochemical change induced by morphine .
C0066814
morphine sulfate
C0026549
morphine