+An **ion channel** is a [protein](/wiki/protein) gate embedded within a cell's membrane. These tiny pores regulate the flow of [ions](/wiki/ion), enabling electrical signals crucial for cellular communication and life itself.
+## See also
+- [Cell Membrane](/wiki/cell_membrane)
+- [Action Potential](/wiki/action_potential)
+- [Neurotransmitter](/wiki/neurotransmitter)
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