If a person suffers from the autoimmune disease multiple sclerosis, it is likely that the person's immune system is attacking self antigens because

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Multiple sclerosis is an autoimmune disease in which the immune system attacks components of the nervous system. This is likely due to a failure in clonal deletion during early differentiation of lymphocytes, allowing a clone of lymphocytes that recognize self antigens to survive. This leads to the activation of autoreactive T cells that attack myelin, the insulating layer around nerve fibers in the central nervous system, resulting in the characteristic symptoms of multiple sclerosis.

If a Person Suffers from the Autoimmune Disease Multiple Sclerosis