Which of the Following Is Not True About the Classical

question 12

Multiple Choice

Which of the following is not true about the classical pathway of complement activation?

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

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