题目6单选题
Regarding the description of the classical activation pathway of complement, which of the following is incorrectA. Antigen antibody complex is its main activatorB. The C1q molecule has six binding sites that must be bound to Ig to activate the subsequent complement componentsC. C4 and C2 are the substrates of C1sD. The activation sequence is C1,2,3,4,5,6,7,8,9E. It is the answer that plays the latest role in the three activation pathways