Question

Normal bacterial inhabitants of the human body
a. are naturally resistant to antibiotics.
b. are able to out-compete some invading pathogens and thus are one of the body's initial defense mechanisms.
c. can be transformed into pathogenic forms if a person's resistance to disease is low.
d. are unable to survive the human body's defense mechanisms.
e. are able to out-compete some invading pathogens and thus are part of the body's innate immunity.

Answer

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