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Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
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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 familiar sounds of your heart are made by the heart's valves as they open and close.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.