Which of the following acts as a positive regulator of complement fixation via stabilization of C3bBb?

Which of the following acts as a positive regulator of complement fixation via stabilization of C3bBb?

Which of the following acts as a positive regulator of complement fixation via stabilization of C3bBb?












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
















Answer: B