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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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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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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.