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Involvement of dopamine receptors in the regulation of NO efflux after acute cocaine injection in the dorsal striatum. Pretreatment of the dopamine D1 receptor antagonist, SCH23390 (SCH) (A, AF = 33.44) and the dopamine D2 agonist, quinpirole (Qui) (B, BF = 19.66) reduced the acute cocaine-evoked increase in the NO efflux. Veh: vehicle, AC: acute cocaine, AS: acute saline. *p < 0.05 vs. saline injection group, #p < 0.05 vs. cocaine injection group.
