| http://www.w3.org/ns/prov#value | - One theory of multiple sclerosis is that it might play a role in the destructive process of the astrocyte's myelin sheath, researchers have not determined the exact cause of multiple sclerosis.A few studies have shown that the disease follows exposure to a virus that may lie dormant until some factor, such as stress or a second exposure to the virus, triggers the disease.Other studies have suggeste
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