we studied the presence of peripheral presynaptic beta-adrenoceptors by giving intra-arterial infusions of epi in the forearm before and during uptake inhibition , and the effects of systemic infusions of very low-dose epinephrine ( epi ) and isoproterenol ( iso ) on hemodynamics and arterial and venous plasma ne concentrations .
C0014563
epinephrine
C0028351
ne