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<p><b>Nuclear transport</b> refers to the mechanisms by which <a href="page.php?w=molecule">molecule</a>s move across the <a href="page.php?w=nuclear_membrane">nuclear membrane</a> of a <a href="page.php?w=Cell_%28biology%29">cell's</a> <a href="page.php?w=Cell_nucleus">nucleus</a>. The entry and exit of large molecules from the nucleus is tightly controlled by <a href="page.php?w=nuclear_pore_complex">nuclear pore complex</a>es (NPCs). Although small molecules can enter the nucleus without regulation, macromolecules such as RNA and proteins require</p><p>
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