<p><span><span><span><span><span><span><span><span><strong><span><span><span>Drug:</span></span></span></strong></span></span><span><span><span><span><span><span> Natural or synthetic substance which (when taken into a living body) affects its functioning or structure, and is used in t</span></span></span></span></span></span><span><span><span><span><span>he diagnosis, mitigation, treatment, or prevention of a disease or relief of discomfort (www.businessdictionary.com).</span></span></span></span></span><br />
<span><strong><span><span><span>Therapeutic advance: </span></span></span></strong></span><span><span><span><span><span>Treatment and care of a patient for the purpose of both preventing and combating disease or alleviating pain or injury (Encyclopedia Britannica).</span></span></span></span></span></span></span></span></span></span></span></p>
