whats the immune system?
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Explanation:
The immune system is a complex network of cells and proteins that defends the body against infection. The immune system keeps a record of every germ (microbe) it has ever defeated so it can recognise and destroy the microbe quickly if it enters the body again
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- human body develop a system for fight for killing the harmful bacterias
- it is generally the white cells present in blood which fight with the foreigner cells or bacteria bacterias to protect us
- a system is known as unity system
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