this was done by comparing the changes in forearm blood flow induced by intra-arterial infusion of the selective alpha 1- and alpha 2-adrenoceptor agonists methoxamine and b-ht 933 , the catecholamines adrenaline and noradrenaline , and the selective alpha 2-adrenoceptor antagonist yohimbine in both study groups .
C0014563
adrenaline
C0028351
noradrenaline