- The 19th letter of the Greek alphabet.
- Symbol for tele; relaxation time.
- 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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Examples: glitazone, GI cocktail, etc.