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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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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.