Chen, S R Spinal endogenous acetylcholine contributes to the analgesic effect of systemic morphine in rats. [electronic resource] - Anesthesiology Aug 2001 - 525-30 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0003-3022 Standard No.: 10.1097/00000542-200108000-00039 doi Subjects--Topical Terms: Acetylcholine--physiologyAnalgesics, Opioid--pharmacologyAnimalsAtropine--pharmacologyAziridines--pharmacologyCarrier Proteins--metabolismCholine--analogs & derivativesCholinergic Agents--pharmacologyHemicholinium 3--pharmacologyInjections, SpinalMaleMecamylamine--pharmacologyMembrane Transport ProteinsMorphine--pharmacologyMuscarinic Antagonists--pharmacologyNicotinic Antagonists--pharmacologyPain Measurement--drug effectsProtein BindingRatsRats, Sprague-DawleyReceptors, Muscarinic--drug effectsReceptors, Nicotinic--drug effectsSpinal Cord--physiology