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Immune system is your body's defence against infection and unwellness. It recognises the cells that structure your body, and can attempt to get eliminate something unknown. It destroys germs (bacteria and viruses) and parasites. however this weapons system can even cause issues. it'll attack given organs or blood from another person, unless fastidiously matched. it should react to harmless invaders like spore grains, inflicting hayfever. In some cases (autoimmune diseases), the system turns against the body's own cells.

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9y ago

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