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. 2017 Summer;16(2):fe2. doi: 10.1187/cbe.17-01-0005

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© 2017 M. T. Owens and K. D. Tanner. CBE—Life Sciences Education © 2017 The American Society for Cell Biology. This article is distributed by The American Society for Cell Biology under license from the author(s). It is available to the public under an Attribution–Noncommercial–Share Alike 3.0 Unported Creative Commons License (http://creativecommons.org/licenses/by-nc-sa/3.0).

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FIGURE 1. — Anatomy of two representative neurons in the brain and a synapse between them. Path of electrical current indicated with yellow arrows. Inset, close-up view of the synapse. Illustration adapted from Alzheimer’s Disease Education and Referral Center, National Institutes on Aging, U.S. National Institutes of Health (www.nia.nih.gov/Alzheimers/Publications/UnravelingtheMystery).