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vova2212 [387]
3 years ago
8

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

Health
1 answer:
Vadim26 [7]3 years ago
7 0

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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