TAU
- the 19th letter of the Greek alphabet
- unstable lepton with a mass approximately 3500 times that of the electron. Symbol: T
- the 19th letter of the Greek alphabet see alphabet table
- short-lived elementary particle of the lepton family that exists in positive and negative charge states and has a mass about 3500 times greater than an electron called also tau particle
- protein that binds to and regulates the assembly and stability of neuronal microtubules and that is found in an abnormal form as the major component of neurofibrillary tangles
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