The M Protein on the Surface of Streptococcus Pyogenes

question 23

Multiple Choice

The M protein on the surface of Streptococcus pyogenes

• A) is part of the capsule and prevents adherence of phagocytes to its surface.
• B) acts as a toxin to human cells.
• C) is a pyrogen that elevates the body temperature.
• D) is an iron-binding protein.
• E) is a chemotatic substance that attracts neutrophils.

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