Figure 2.
Effects of PG01037 (3–30 mg/kg, i.p.) on methamphetamine self-administration under fixed-ratio 2 (FR2) reinforcement schedules in rats. (A) There was no significant effect of PG01037 on the rate of infusion for methamphetamine self-administration. (B) There was no effect of PG0137 on inactive lever presses.