120k views
5 votes
What is the body's first line of defense against bacteria and viruses

User Izhaki
by
7.1k points

2 Answers

3 votes
Physical barriers such as your skin, and chemical barriers such as proteins that attack invaders in the body.
User Snuffn
by
6.4k points
3 votes
The first line of defense is physical barriers
User Theuniverseisflat
by
6.9k points