these results seem to indicate that carvedilol may cause the inhibition of catecholamine secretion through its blocking action on calcium influx into the cells , and suggest the possibility that the inhibitory action of carvedilol on calcium influx is presumably based on its stabilizing action on the plasma membranes rather than its blocking action on the calcium channels in the chromaffin cell .
C0007634
cells
C0007603
plasma membranes