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In Health / High School | 2014-10-10

Which is NOT a part of the immune system?

A. Skin
B. Stomach acid
C. Mucus
D. Fingernails

Asked by velasco12345

Answer (2)

The part that is not part of the immune system, I think is the finger nails.

Answered by clara75 | 2024-06-10

The correct answer is D. Fingernails, as they do not actively participate in the immune system's defense against pathogens like the skin, stomach acid, and mucus do.
;

Answered by clara75 | 2024-12-13

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