论文信息 - The influence of the new enkephalin derivative, cyclo[N<ce:sup loc=post>ε</ce:sup>,N<ce:sup loc=post>β</ce:sup>-carbonyl-<ce:small-caps>d</ce:small-caps>-Lys<ce:sup loc=post>2</ce:sup>,Dap<ce:sup loc=post>5</ce:sup>] enkephalinamide (cUENK6), on reinstatement of ethanol-induced conditioned place pre