In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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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 Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
A very high-resolution texture of the Moon, including a normal map
Frozen human iPS cells
Cleaning Agent
Close-up view of Pluto's mountains, frozen plains and hazes