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Neurotransmitters

From , former About.com Guide

Updated September 03, 2008

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Photo © Alzheimer's Disease Education & Referral CenterPhoto © Alzheimer's Disease Education & Referral Center
Definition: Chemicals released by neurons (brain cells) that act as messengers by crossing synapses (spaces between brain cells) and affecting the receiving cells. Acetylcholine and glutamate are two neurotransmitters whose activity have been linked to Alzheimer's disease.

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