Anaphylotoxins are___________?
Correct answer: A. C3a, C5a
- A. C3a, C5a
- B. C3b, C5a
- C. C2, C3
- D. C3b, C5b
Explanation
C3a and C5a are anaphylatoxins because they trigger mast-cell degranulation and increase vascular permeability. C5a also acts as a powerful neutrophil chemotactic factor, whereas C3b mainly promotes opsonisation.
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