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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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The human body produces and destroys 15 million blood cells every second.
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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.