a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
[ Syn: norepinephrine , norepinephrine , norepinephrine ]
a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
[ Syn: norepinephrine , norepinephrine , norepinephrine ]