Which of the following statements regarding the complement system are true?
A. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated leukocytes
B. Complement products referred to as anaphylatoxins include C1, C3a, C4a, and C5a
C. The principal role of C5a is in bacterial opsonization
D. The alternative and classical pathways converge proximal to generating the membrane attack complex (C5b-9)
Answer:A
Which of the following statements regarding the complement system are true?
A. Complement activation yields products which are directly cytotoxic as well as products which act indirectly via activated leukocytes B. Complement products referred to as anaphylatoxins include C1, C3a, C4a, and C5a C. The principal role of C5a is in bacterial opsonization D. The alternative and classical pathways converge proximal to generating the membrane attack complex (C5b-9)