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4 votes
The body's first line of defense against pathogens includes

A. antibodies.
B. memory cells.
C. helper T cells.
D. wax in the ears.

User Spinus
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1 Answer

6 votes

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.
User AnderCover
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