Diagram of a normal brain
<ul><li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Garrondo" title="User:Garrondo">Garrondo</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Garrondo" title="User talk:Garrondo">talk</a>)</li>
<li><a href="//commons.wikimedia.org/wiki/File:SEVERESLICE_HIGH.JPG" class="mw-redirect" title="File:SEVERESLICE HIGH.JPG">SEVERESLICE_HIGH.JPG</a>: ADEAR:  "Alzheimer's Disease Education and Referral Center, a service of the National Institute on Aging."</li>
<li><a href="//commons.wikimedia.org/wiki/File:PRECLINICALSLICE_HIGH.JPG" class="mw-redirect" title="File:PRECLINICALSLICE HIGH.JPG">PRECLINICALSLICE_HIGH.JPG</a>: ADEAR:  "Alzheimer's Disease Education and Referral Center, a service of the National Institute on Aging."</li></ul>
<ul><li><a href="//commons.wikimedia.org/wiki/File:SEVERESLICE_HIGH.JPG" class="mw-redirect" title="File:SEVERESLICE HIGH.JPG">SEVERESLICE_HIGH.JPG</a></li>
<li><a href="//commons.wikimedia.org/wiki/File:PRECLINICALSLICE_HIGH.JPG" class="mw-redirect" title="File:PRECLINICALSLICE HIGH.JPG">PRECLINICALSLICE_HIGH.JPG</a></li></ul>