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Reference.org
Sodium–hydrogen antiporter
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<p>The sodium–hydrogen antiporter or sodium–proton exchanger (Na+/H+ exchanger or NHX) is a <a href="/facts/Membrane_protein/FboTeM8Q">membrane protein</a> that transports <a href="/facts/Sodium/eYuSPu2V">Na+</a> into the cell, and <a href="/facts/Proton/clCjepXP">H+</a> out of the cell (<a href="/facts/Antiporter/HHMvokyn">antiport</a>).</p>