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The average office desk has 400 times more bacteria on it than a toilet.
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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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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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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Medication errors are more common among seriously ill patients than with those with minor conditions.