the effects of various alpha-adrenergic agonists and antagonists on the contractile properties of the isolated urethra of male and female rabbits were examined and the population of alpha 1- and alpha 2-adrenoceptors , using radioligand receptor binding techniques , was also quantified to define the functional role of postsynaptic alpha-adrenoceptors in urethral smooth muscle .
C0001639
alpha 2-adrenoceptors
C0034784
alpha-adrenoceptors