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<p>role in the intermediary metabolism of various biological compounds. Such radicals are also messengers in a process dubbed <a href="page.php?w=redox_signaling">redox signaling</a>. A radical may be trapped within a <a href="page.php?w=Cage_effect_%28chemistry%29">solvent cage</a> or be otherwise bound.</p>

<p><big> Formation </big></p>
<p>Radicals are either (1) formed from spin-paired molecules or (2) from other radicals. Radicals are formed from spin-paired molecules through <a href="page.php?w=Homolysis_%28chemistry%29">homolysis</a> of weak bonds</p><p>
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