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Blockade of DA-reversal of quinpirole-inactivity by terazosin but not by SCH23390. Mice were infused with 3 nmol quinpirole + 30 nmol DA in the presence of either 0 (veh), 3 or 10 nmol of terazosin or SCH23390. Terazosin or SCH23390 were dissolved in the Q3-DA30-containing saline solution (veh). Means and SEMs of 6–10 determinations. *P < 0.01 vs. vehicle condition.
