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Effects of acute treatment with lorcaserin (1.0 mg/kg) on heroin (0.32 – 32 μg/kg/inj)- and food (1 g banana-flavored pellet)-maintained responding. Abscissa, heroin dose in μg/kg/injection (log scale). Ordinate, total heroin injections earned per session or 1-g banana flavored food pellet deliveries per component. All data points represent mean ± S.E.M. of three subjects.
