Assertion: morphine | /r/CapableOf | exert similar influence
Facets:
value: on the cerebral opioid receptor system
type: LOCATION
Source sentences:
text: Morphine, the archetypal opioid, and other opioids (e.g., codeine, oxycodone, hydrocodone, dihydromorphine, pethidine) all exert a similar influence on the cerebral opioid receptor system.