BMJ. 2020 Mar 4;368:m513. doi:10.1136/bmj.m513 National Institutes of Health. Selenium Fact Sheet National Institutes of Health: Office of Dietary Supplements. Choline: Fact sheet for health ...

Ion transport across cell membranes is essential to cell communication and signaling. Passive ion transport is mediated by ion channels, membrane proteins that create ion conducting pores across cell ...