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Pronunciation: taw


  1. The 19th letter of the Greek alphabet.
  2. Symbol for tele; relaxation time.
  3. A protein that associates with microtubules and other elements of the cytoskeleton; tau accelerates tubulin polymerization and stabilizes microtubules; tau is also found in the plaque observed in patients with Alzheimer disease and in cerebral neurons in other neurodegenerative disorders.
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.