Explain ways how immune system protect us, Science

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Explain Ways How Immune System Protect Us

1)  It creates a barrier that prevents bacteria and viruses from entering our body.

2)  If a bacterium or virus does get into the body,  the immune  system attempts to detect  and eliminate  it before it can make itself at home and reproduce, and

3)  If the virus or bacteria are able to reproduce and start causing problems, our immune system is in charge of eliminating it.


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