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<a accesskey="3" href="page.php?w=biological_activity&amp;p=2">3.Next</a>
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<p>In <a href="page.php?w=pharmacology">pharmacology</a>, <b>biological activity</b> or <b>pharmacological activity</b> describes the beneficial or adverse effects of a <a href="page.php?w=drug">drug</a> on <a href="page.php?w=organism">living matter</a>. When a drug is a complex chemical mixture, this activity is exerted by the substance's <a href="page.php?w=active_ingredient">active ingredient</a> or <a href="page.php?w=pharmacophore">pharmacophore</a> but can be modified by the other constituents. Among the various properties of chemical compounds,</p><p>
<a accesskey="3" href="page.php?w=biological_activity&amp;p=2">3.Next</a>
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