补体系统是机体抗感染的重要屏障，由约３０种按特定顺序依次激活的蛋白质组成，其激活途径包括经典途径和替代途径，补体Ｃ３是两种途径激活的中心环节。近年研究表明，补体不仅与炎症反应及免疫复合物病有关，亦可能是组织损伤的一个普通介质。补体激活与缺血和再灌注、... The complement system is an important barrier to the body’s anti-infective. It consists of about 30 proteins activated sequentially in a specific order. Its activation pathway includes the classical pathway and the alternative pathway. Complement C3 is the central link of activation of both pathways. In recent years, studies have shown that complement is not only related to the inflammatory response and immune complex disease, but also may be an ordinary medium of tissue damage. Complement activation and ischemia and reperfusion, ...