Tseng, L F Evidence for epsilon-opioid receptor-mediated beta-endorphin-induced analgesia. [electronic resource] - Trends in pharmacological sciences Dec 2001 - 623-30 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.; Review ISSN: 0165-6147 Standard No.: 10.1016/s0165-6147(00)01843-5 doi Subjects--Topical Terms: Analgesics, Opioid--administration & dosageAnimalsHumansInjections, SpinalReceptors, Opioid--physiologybeta-Endorphin--administration & dosage