Real-time cellular impedance measurements detect Ca2+ channel-dependent oscillations of morphology in human H295R adrenoma cells

► L-type Ca channel opening induces oscillations of cellular impedance in H295R cells. ► Tight regulation of intracellular Ca is mandatory for impedance oscillations. ► Ca triggers calmodulin-dependent kinase cascade. ► Cellular impedance oscillations represent exo/endocytosis cycles.