FIGURE 4.

The effects of BCP pretreatment on METH-induced reinstatement of drug seeking in rats. (A): Active lever presses during the last session of METH self-administration, last extinction session, and reinstatement test, illustrating that BCP (25, 50 mg/kg, i.p., 30 min prior to test) significantly reduced METH priming-induced reinstatement. (B): BCP, at the same dose, had no effect on inactive lever presses during reinstatement testing. Data are presented as means ± SEM. *p < 0.05, when compared to the vehicle group.