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Nubmer of punished licks registered in a 5 min session in the vogel conflict test performed 1 h after the injection of vehicle (VEH, p.o.) and CZZX (0.75, 1.5 and 3 g/kg, p.o.) or 0.5 h after the injection of diazepam (DZP, 1 mg/kg, p.o.). Columns represent the means ± SEM, n = 9-10 rats. *P < 0.05 compared to the control group.
