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what is the bodys first line of defense against pathogens? A white blood cells B mucous membranes C lymph nodes D red blood cells
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what is the bodys first line of defense against pathogens? A white blood cells B mucous membranes C lymph nodes D red blood cells

User Janette
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Hello there.

What is the bodys first line of defense against pathogens?

A) white blood cells
User Alexandre Vassalotti
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The body's first line of defense against pathogens are mucous membranes, as they prevent bacteria from entering the body. Hope this helps!
User Kvetis
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