Objective: To study the effect of ondansetron(OND),a 5-HT 3 receptor antagonist, on morphine-induced conditioned place preference(CPP) in mice.

• 目的 :探讨 5 -HT3 型受体特异性拮抗剂奥丹西隆对吗啡诱导的条件性位置偏爱 (CPP)效应的影响。