出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/05/09 05:12 UTC 版)
In the field of cell biology, potassium channels are the most widely distributed type of ion channel and are found in virtually all living organisms. They form potassium-selective pores that span cell membranes. Furthermore potassium channels are found in most cell types and control a wide variety of cell functions.