AUTHOR=Kaestner Lars , Wang Xijia , Hertz Laura , Bernhardt Ingolf TITLE=Voltage-Activated Ion Channels in Non-excitable Cells—A Viewpoint Regarding Their Physiological Justification JOURNAL=Frontiers in Physiology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2018.00450 DOI=10.3389/fphys.2018.00450 ISSN=1664-042X