oliviaindy oliviaindy

22-04-2021
Health

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The first line of defense involves which structure(s)? 0 T-cells O skin O blood O B-cells

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leetiana08 leetiana08

23-04-2021

Answer: Skin

Explanation:

Level one of this system consists of physical barriers like your skin and the tears, sweat, saliva and mucous produced by the skin and mucosal lining are part of that physical barrier, too.

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