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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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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.