The process of <i>in vivo</i> activation of <a href="https://en.wikipedia.org/wiki/leflunomide" class="extiw" title="w:leflunomide">leflunomide</a> (an immunosuppressive antirheumatic drug <b>Arava</b>) to its one and only active metabolite <a href="https://en.wikipedia.org/wiki/teriflunomide" class="extiw" title="w:teriflunomide">teriflunomide</a> (an immunosuppressant to treat multiple sclerosis, sold under the brand name <b>Aubagio</b>). Created with <a rel="nofollow" class="external text" href="http://www.chemdoodle.com">ChemDoodle 7.0.2</a> and <a rel="nofollow" class="external text" href="http://www.adobe.com/products/illustrator.html">Adobe Illustrator CC</a>.
<a href="//commons.wikimedia.org/wiki/User:Vaccinationist" title="User:Vaccinationist">Vaccinationist</a>
<span class="int-own-work" lang="en">Own work</span>