the pharmacological characteristics of the alpha-adrenoceptor population in the rabbit isolated saphenous vein has been examined with ( - ) -noradrenaline ( na ) , as principal agonist , and a number of antagonists with selectivity for either alpha 1- or alpha 2-adrenoceptors .
C0034784
alpha-adrenoceptor
C0001639
alpha 2-adrenoceptors