Director / Editor: Victor Teboul, Ph.D.

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Independent and neutral with regard to all political and religious orientations, Tolerance.ca® aims to promote awareness of the major democratic principles on which tolerance is based.

Parkinson's disease: blood changes may occur years before diagnosis

By Alastair Noyce, Reader in Neurology and Neuroepidemiology, Queen Mary University of London

Our study found lower levels of one type of immune cell – which may even be seen years before a person develops the disease.

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