Electro-acupunture and endogenous morphines.
D015670:Acupuncture Therapy; D000698:Analgesia; D002986:Clinical Trials as Topic; D004599:Electric Stimulation Therapy / Q000379:methods; D006801:Humans; D008636:Mesencephalon / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology*; D059408:Pain Management
D009270:Naloxone