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A key protein that could aid in the treatment of diseases such as multiple sclerosis and other neuropathies has been identified,scientists announced.The protein,known as Par-3,is involved in the formation of the protective sheath covering the long extension of nerve cells.This discovery could have a major impact on the treatment of conditions that occur as result of demyelination.Myelin, the white matter that costs all nerves,allows long distance communication in the nervous system.At a basic level,the nervous system functions like a collection of wires that transmit electrical signals encoding our thoughts,feelings and actions.Just as an electrical wire needs insulation ,myelin is wrapped around axons-the wire-like extensions of neurons that make up nerve fibres.The sheath helps to propagate the electrical signal and maximise the efficiency and velocity of signals in our brain and body.