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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.