the pressor response to all three agents was antagonized by the alpha-1 adrenoceptor antagonist , prazosin ( 0.1 mg/kg i.v . ) and the alpha-2 adrenoceptor antagonist , rauwolscine ( 0.5 mg/kg i.v . ) , suggesting the involvement of both alpha adrenoceptor subtypes in the vasopressor responses elicited by these compounds .
C0001638
alpha-1 adrenoceptor
C0034784
alpha adrenoceptor