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OpenStudy (mikeymaximum):
Which of the following are part of the body’s first line of defense against pathogens? A.white blood cells B.red blood cells C.lymph nodes D.mucous membranes
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OpenStudy (mikeymaximum):
I know that the answer is not B)
OpenStudy (anonymous):
The correct answer is D. Mucous Membranes. Hope I helped! :)
OpenStudy (abb0t):
@dan815
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