Heidbreder, C Differential role of delta-opioid receptors in the development and expression of behavioral sensitization to cocaine. [electronic resource] - European journal of pharmacology Mar 1996 - 207-16 p. digital Publication Type: Journal Article ISSN: 0014-2999 Standard No.: 10.1016/0014-2999(95)00815-2 doi Subjects--Topical Terms: AnimalsBehavior, Animal--drug effectsCocaine--pharmacologyMaleMotor Activity--drug effectsNaltrexone--analogs & derivativesNarcotic Antagonists--pharmacologyNarcotics--pharmacologyNicotine--pharmacologyNicotinic Agonists--pharmacologyRatsRats, Sprague-DawleyReceptors, Opioid, delta--drug effects