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An immune disorder is a dysfunction of the immune system. These disorders can be characterized in several different ways: * By the component(s) of the immune system affected * By whether the immune system is overactive or underactive * By whether the condition is congenital or acquired According to the International Union of Immunological Societies, more than 150 primary immunodeficiency diseases (PIDs) have been characterized. However, the number of acquired immunodeficiencies exceeds the number of PIDs. It has been suggested that most people have at least one primary immunodeficiency. Due to redundancies in the immune system, though, many of these are never detected. ==List of some autoimmune disorders== (詳細はLupus *Scleroderma *Certain types of hemolytic anemia *Vasculitis *Type one diabetes *Graves disease *Rheumatoid arthritis *Multiple sclerosis (although it is thought to be an immune-mediated process) *Goodpasture's syndrome *Pernicious anemia *Some types of myopathy * Lyme disease (Late) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Immune disorder」の詳細全文を読む スポンサード リンク
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