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| Ion Transport Antiport | Ion Cotransport | Ion Exchange, Intracellular | Symport | Uniport | Active Ion Transport | Facilitated Ion Transport | Passive Ion Transport | Cotransport, Ion | Exchange, Intracellular Ion | Intracellular Ion Exchange | Transport, Ion The movement of ions across energy-transducing cell membranes. Transport can be active, passive or facilitated. Ions may travel by themselves (uniport), or as a group of two or more ions in the same (symport) or opposite (antiport) directions. |