among these effects , those of the sympathetic stimulation , norepinephrine , and epinephrine were not completely abolished by pretreatment with phenoxybenzamine or propranolol , but the effect of isoproterenol was abolished by pretreatment with propranolol , and was hardly influenced by pretreatment with phenoxybenzamine .
C0028351
norepinephrine
C0014563
epinephrine