So once we form this pathway in process A, once we form this complex in process A, it goes on, activates C five C five C five is broken down into C five A and C five B, and it's C five B that basically calls upon C six C seven C eight. They combine to form that membrane attack complex that forms that water channel on that membrane that license that cell. Now, the other pathway is pathway B. And pathway B is actually an amplification process. So what do we mean by that is the following. So we can either go this way, or this molecule can have a positive feedback effect on C three.