dpi ( 100 and 200 micrograms/kg ) ( reported to be a selective agonist at da receptors mediating neuronal inhibition and also active on alpha-adrenoceptors ) and b-ht 958 ( 1 and 10 mg/kg ) ( a stimulant of da autoreceptors but a blocker of alpha 2-adrenoceptors ) were unable to modify the natural preference of rats for closed arms .
C0034784
alpha-adrenoceptors
C0034783
adrenoceptors