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What is the immune system?

Your immune system is a large network of organs, white blood cells, proteins and chemicals. These parts all work together to protect you from germs and other invaders. Your immune system also helps your body heal from infections and injuries.

Function

What does the immune system do

Your immune system works hard to keep you healthy. It does this by:

  • Keeping invaders (like germs) out of your body.
  • Destroying invaders.
  • Limiting how much harm the invaders can do if they’re inside your body.
  • Healing damage to your body.
  • Adapting to new challenges and threats.

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Heena Test Patient Story

“TEST WITH DUPLICATE QUOTES It’s such a Test comfort to have had the same providers involved in her care since she was born — TEST and to have them working together to make decisions about what is most important for her at any given time 5.”
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