| 1. | An array of regulatory proteins have been found , which inhibit the formation of central enzymes involved in early stages of the complement activation pathway . these include membrane cofactor protein ( mcp cd46 ) , decay - accelerating factor protein ( daf cd5 5 ) , complement receptor 1 ( cr1 , cd35 ) , as well as cd59 , which inhibits formation of the membrane attack complex during later stages . these regulatory factors are widely expressed and abundant on many cells , and in fluids of reproductive system
目前发现，机体多种细胞以及生殖系统的体液中表达和分泌丰富的补体调控蛋白，包括作用于补体活化早期阶段的cd55 、 cd46 、 cd35和作用于补体活化终末阶段的cd59 ，它们分别通过抑制补体活化过程中关键的c3 、 c5转化酶和抑制形成膜攻击单位，抵抗补体对自身组织细胞的攻击。 |
