Which of the following statements about the classical pathway of complement activation is FALSE?

Which of the following statements about the classical pathway of complement activation is FALSE?



A) C1 is the first protein activated in the classical pathway.
B) The C1 protein complex is initiated by antigenantibody complexes.
C) C3 is not involved in the classical pathway.
D) Cleaved fragments of some of the proteins act to increase inflammation.
E) C3b causes opsonization.


Answer: C) C3 is not involved in the classical pathway.


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