Seudónimo Seudónimo

01-02-2016
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The body's first line of defense against pathogens includes
A. antibodies.
B. memory cells.
C. helper T cells.
D. wax in the ears.

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Lindarose Lindarose

01-02-2016

this may not be the answer you were looking for but I learned that the body's 1st line of defense against pathogens are your skin,tears and mucous.

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