Diagram of a normal brain
ADEAR:  "Alzheimer's Disease Education and Referral Center, a service of the National Institute on Aging."
<a rel="nofollow" class="external free" href="http://www.nia.nih.gov/Alzheimers/Resources/HighRes.htm">http://www.nia.nih.gov/Alzheimers/Resources/HighRes.htm</a>