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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Everyone has one nostril that is larger than the other.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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![The slight (5 microsecond) difference in the firing of the companion cylinders is enough time to ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_6_52_55_298211569.png)