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First-Line Defenses: Chemical Barriers

19. Innate Immunity / First-Line Defenses: Chemical Barriers / 문제 2

문제 2

To be able to survive, the bacterium Helicobacter pylori neutralizes which of the following?

A

Vaginal secretions

B

Salivary enzymes

C

Stomach acid

D

Nasal secretions

E

Sebum