what is immune system?


what is immune system?

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Ahmed Ragab 11 months 2020-10-28T19:26:44+00:00 1 Answer 429 views 0

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    What is the immune system? Your immune system is a complex network of cells, tissues, and organs. Together they help the body fight infections and other diseases. When germs such as bacteria or viruses invade your body, they attack and multiply

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