Which of the following acts as a serine protease that, with cofactors, cleaves C3b and C4b?

Which of the following acts as a serine protease that, with cofactors, cleaves C3b and C4b?











A. DAF (CD55)
B. Properdin
C. Factor H
D. Factor I
E. MCP (CD46)














Answer: D


Biology

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