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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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Everyone has one nostril that is larger than the other.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.