自身抗体是指能与机体自身正常组织成份或改变了的组织成份起反应的抗体。其中针对独特型决定簇的自身抗体称为抗独特型抗体(anti-Id)。自身抗体能直接作用于自身抗原而产生自身免疫反应,甚至进而导致自身免疫病的发生。然而自身抗体并不都是对机体造成损害作用,在正常机体内还发挥着一定的生理功能,并在免疫调节平衡中 Autoantibodies are those that react with the body’s own normal tissue components or altered tissue components. The autoantibodies against idiotypic determinants are called anti-Id. Autoantibodies can act directly on their own antigens and produce autoimmune reactions, and even lead to the occurrence of autoimmune diseases. However, autoantibodies are not all the damage caused by the body, in the normal body also play a certain physiological function, and immune balance in the balance