补体系统是由C1～C9及各种抑制或灭活因子等20余种蛋白成分组成。通过各成分间的协同作用参与机体的免疫应答,维护机体的相对稳定;但它也参与机体的免疫病理过程,引起组织损伤、炎症和过敏反应。近年来,对补体系统的基础研究工作进展迅速。本文仅就补体系统的调节作用,介绍如下。 The complement system consists of more than 20 protein components, including C1 to C9 and various inhibitory or inactivating factors. Through the synergy between the components involved in the body’s immune response, maintaining the body’s relative stability; but it also participate in the body’s immune pathological process, causing tissue damage, inflammation and allergic reactions. In recent years, basic research on the complement system has progressed rapidly. This article only describes the regulatory role of the complement system as described below.