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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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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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There are more nerve cells in one human brain than there are stars in the Milky Way.