Which of these statements is NOT true about complement?
A. Complement is required for formation of antigen-antibody complexes.
B. Complement is a complex of plasma proteins that are activated in the presence of pathogens.
C. Complement attracts phagocytes to the bacterial cell and increases its likelihood of being engulfed.
D. Complement forms holes in bacterial membranes and allows fluid and salts to enter a bacterial cell.
Answer: A
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