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Reverse-image photomicrographs of Fos-like immunoreactivity in TTX- or VEH-treated striata of rats injected systemically with SKF 82526 plus quinpirole (VEH, A; TTX, A′) or cocaine (VEH, B; TTX,B′) and Fos-like immunoreactivity in striata of rats injected systemically with saline plus amphetamine (C) or L-741,626 (10 mg/kg) plus amphetamine (D).
