Modulation of the slow inward Ca2+current by adrenaline in bullfrog sympathetic ganglion cells.

Abstract
The slow inward current, which is carried almost exclusively by Ca2+, was disclosed by voltage-clamp study on bullfrog sympathetic ganglion cells in Ringer solution. This current was markedly depressed by the action of adrenaline [epinephrine], suggesting that adrenaline evidently modulates the Ca2+ influx of ganglion cells under physiological conditions.