asked 148k views
4 votes
Which is NOT a part of the immune system?

a.skin
b.stomach acid
c.mucus
d.fingernails

asked
User Edwardw
by
8.2k points

1 Answer

3 votes
your anwser to your question is
(D) Fingernails
answered
User AndyHu
by
8.3k points

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