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Calcium-Activated Potassium Channels
There are currently 3 types of Calcium-Activated Potassium Channels that have been identified by researchers: BK, IK and SK (which itself has been categorized into the the subgroups SK1, SK2 and SK3). It is mostly neural cells that contain these channels, and they have the distinctive characteristic of being activated by Ca2+ ions, as opposed to being voltage-dependent like many other ion channels