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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.
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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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There are 20 feet of blood vessels in each square inch of human skin.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.