lovelylife22
lovelylife22 lovelylife22
  • 24-04-2017
  • Biology
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How does the immune system protect our body from diseases? Mention the 3 lines of defenses

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Glenn5526565
Glenn5526565 Glenn5526565
  • 24-04-2017
The system make a wall and what ever gets pass it dies but not all of it dies that is how we get sick

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