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OpenStudy (anonymous):
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 (anonymous):
A. white blood cells but all are correct
OpenStudy (destinymasha):
white blood cells
OpenStudy (anonymous):
Definitely A. white blood cells.
OpenStudy (wolfe8):
First line is our skin
OpenStudy (wolfe8):
I'd say D
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OpenStudy (anonymous):
Oi, thank you all! I appreciate your help<3
OpenStudy (wolfe8):
You're welcome. Let us know the answer so we can make sure.
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