<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Methylation - Page 3 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Methylation&amp;p=2">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Methylation&amp;p=4">3.Next</a>
</p>
<p>In vitro methylation of tissue samples is also a way to reduce some <a href="page.php?w=histology">histological staining artifacts</a>. The reverse of methylation is <a href="page.php?w=demethylation">demethylation</a>.</p>

<p><big>In biology</big></p>
<p>In biological systems, methylation is accomplished by enzymes.  Methylation can modify heavy metals and can regulate gene expression, RNA processing, and protein function. It is a key process underlying <a href="page.php?w=epigenetics">epigenetics</a>. Sources of methyl groups include S-methylmethionine,</p><p>
<a accesskey="1" href="page.php?w=Methylation&amp;p=2">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Methylation&amp;p=4">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
