Non-pathogenic microorganisms are constantly being inhaled or ingested. Which of the following is the reason why these microorganisms do not cause disease? A) They lack attachment factors and are readily expelled by the host. B) They are not ingested or inhaled in large numbers. C) They have not evolved strategies to evade host defenses. D) All of the answer choices are correct.
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Step 1: Non-pathogenic microorganisms lack attachment factors, making them readily expelled by the host. Show more…
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