82.4k views
5 votes
Please help if you want

Which of the following is NOT an example of the body's first line of defense against Infection?

Skin

The lining of the degestive tract

The lining of the respiratory tract

White blood cells

User Adaeze
by
5.0k points

1 Answer

4 votes
I believe it would be skin.
User Chechulin
by
4.9k points