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d. C5a QUESTION 9 Which one of the following complement protein is targeted and down regulated by vitronectin (S-protein) and clusterin in complement system to down regulate the activation of complement system? O a. Vitronectin binds to MBL to prevent lectin pathway Ob Vitronectin binds to C1q to prevent classical pathway O c. Vitronectin binds to factor B of alternative pathway O d. Vitronectin binds to C8 of terminal pathway to prevent C9 binding and then prevent MAC formation QUESTION 10 How many types of human ficollins in classical pathway of complement system, and what are they? a. 3 Types, L-ficollin, H-ficollin, M-ficollin b.4 Types; L-ficollin, H-ficollin, M-ficollin, N-ficollin O c 2 Types; L-ficollin, H-ficollin O d. 1 Type L-ficollin Click Save and Submit to save and submit. Click Save All Answers to save all answers. ENG (0 Sar nilo