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19. Innate Immunity - Part 1 of 3

19. Innate Immunity / Physical Barriers in First-Line Defenses: Skin / Problem 6

Which of the following statements about the skin is true?

A

It can absorb pathogens easily.

B

It is impermeable to all substances.

C

It functions best when completely dry.

D

It provides a barrier against external pathogens.

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