All of the following represent physical and/or chemical barriers that form the body's first line of ...

hellothere2

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All of the following represent physical and/or chemical barriers that form the body's first line of ...

All of the following represent physical and/or chemical barriers that form the body's first line of defense against pathogens EXCEPT which one?
A) tears
B) resident bacteria
C) skin surface
D) earwax
E) antibodies

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hellothere2 Author

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