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Systemic injections of CGS 21680. a Effects of systemic injections of CGS 21680 on the lever pressing on the FR5/chow-feeding procedure. Mean (±SEM) number of lever presses after injections of vehicle and different doses of CGS 21680. b Effects of systemic injections of CGS 21680 on chow consumption on the FR5/chow-feeding procedure. Mean (±SEM) weight of chow intake in grams after injections of vehicle and different doses of CGS 21680. Asterisks different from vehicle, p<0.05
