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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
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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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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
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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.
![In the summer of 1793, a yellow fever epidemic struck Philadelphia, killing nearly 4,000. Tens of th](https://biology-forums.com/gallery/47/medium_374628_16_08_15_9_52_07_222511109.jpeg)
![Gap junctions. Gap junctions connect the cytoplasm of two adjacent cells. In the mammalian brain, ...](https://biology-forums.com/gallery/30/medium_548020_02_06_17_2_26_26_302612176.png)