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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 approximately 3 million unintended pregnancies in the United States each year.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.