1 receptors mediating catecholamine-induced hyperpolarization of isolated superior cervical sympathetic ganglia of the rat have been characterized by means of an extracellular recording method.2 ( - ) -noradrenaline ( ec ( 50 ) , 1.7 +/- 0.6 mum ) produced an immediate low-amplitude ( < 400 muv ) hyperpolarization .
C0007412
catecholamine
C0028351
noradrenaline