2008 Daniels, David. "Ion Channels Play Key Role in R&D". 1 June 2008.Genetic Engineering & Biotechnology News,28 (11), pg 24.; archived 2 January 2010. ISSN 1935-472X. OCLC 77706455.
Ion channels, which facilitate this movement, are protein assemblies that penetrate the membrane and catalyze passage of specific ions such as sodium (Na+), potassium (K+), or calcium (Ca2+) into or out of the cell down the electrochemical gradient.
2017 August 1, Douglas Fox, “Aliens in our midst”, inAeon[1]:
Pleurobrachia was missing many common proteins calledion channels that generate electric signals that travel rapidly down a nerve.
