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Multiple sclerosis (MS) is a nervous system disease which affects spinal cord and the brain. MS damages the myelin sheath. Myelin sheath is a term which exemplifies that material which surrounds and protects human nerve cells. This damage blocks messages between brain and the body and leads to the symptoms of MS. Some of the major symptoms of MS include thinking and memory problems, visual disturbances, problem in coordination and balancing of the body and muscle weakness.
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