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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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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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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
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There are 20 feet of blood vessels in each square inch of human skin.