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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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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 strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.
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The horizontal fraction bar was introduced by the Arabs.
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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.