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Z8arzasgtpmmiamousa
Z8arzasgtpmmiamousa Z8arzasgtpmmiamousa
  • 24-07-2016
  • Biology
Answered

Which is NOT a part of the immune system? a.skin b.stomach acid c.mucus d.fingernails

Verified Answer :

meerkat18
meerkat18 meerkat18
  • 01-08-2016

Immune system is a network composed of cells, tissues, and organs that work together so that the body may be protected from harm. Skin, stomach acid, and mucus all perform to protect the body. The fingernails, being outgrowth of skin, do not perform that much. Thus, the answer is letter D.

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