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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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barry barry
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10 years ago
The body's first line of defense against the invasion of disease-causing microorganisms is:
A) phagocytes
B) natural killer cells
C) skin and mucous membranes
D) inflammatory response
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padrepadre
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10 years ago
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barry Author
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#2
10 years ago
Thanks.
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