Skin and Mucous Membranes

question 17

Multiple Choice

Skin and mucous membranes

• A)are the first line of innate immunity.
• B)are the first line of adaptive immunity.
• C)act as physical barriers to infection.
• D)contain antimicrobial secretions.
• E)are the first line of innate immunity,act as physical barriers to infection,AND contain antimicrobial secretions.

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