Multiple choice

Bacillus anthracis and Escherichia coli are the two most prominent extracellular bacterial pathogens. Extracellular bacteria try to avoid killing by

  1. activating neutrophils

  2. accelerating complement activation

  3. synthesising capsules

  4. deviating complement deposition to the cell membrane

  5. limiting variation in their antigens
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Capsules do not adhere readily to phagocytic cells and may cover carbohydrate molecules which could be recognised by phagocyte receptors.

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