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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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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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The average office desk has 400 times more bacteria on it than a toilet.
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Everyone has one nostril that is larger than the other.
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.