补体系统包括典型途径、代替途径和抑制成份,至少由18种血清蛋白组成,作为抗原抗体反应最初的体液介质,它的作用是激活特殊的细胞功能:使细胞膜变性或释放组织胺、白细胞游走、免疫粘附反应、吞噬作用等。由于这样丰富多彩的功能,它同抗体、细胞因素等一道使机体对感染起到防御作用。反之,从它的发炎性、伤害细胞性也给 The complement system includes a typical pathway, instead of pathway and inhibitory elements, consisting of at least 18 serum proteins. As the initial body fluid mediator of the antigen-antibody reaction, its role is to activate specific cellular functions by denaturing or releasing histamine and leukocyte migration Immune adhesion reaction, phagocytosis and so on. Due to such a rich and varied function, it plays a defensive role against the infection, together with antibodies, cytokines and the like. On the contrary, from its inflammation, damage to cells also give