【单选题】补体经典激活途径的C5转化酶是

A.C3bBb3b

B.C4b2a3b

C.C3bBb

D.C4b2a

E.C56789

A.C3bBb3b

B.C4b2a3b

C.C3bBb

D.C4b2a

E.C56789

A.C 3bnBb

B.C 4b2a3b

C.C 3bBb

D.C 4b2a

E.C56789

A.攻膜复合体的形成及其溶解细胞效应相同

B.激活物质相同

C.C3 转化酶的组成相同

D.C5转化酶相同

E.参与的补体成分相同

A.C4a2a

B.C4a2b

C.C4b2b

D.C4b2a

A.C4b3b

B.C3bBb

C.C4b2a

D.C4b2a3b

E.C4b2b3b

A.C1

B.C4b2a

C.C3bnBb

D.C4b2a3b

E.C3bBb

A.2个以上IgG或IgM抗体Fc端结合（抗原抗体复合物）

B.细菌脂多糖

C.细菌甘露糖

D.C3转化酶

A.C2

B.C3

C.C4

D.C5

E.C6