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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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The average office desk has 400 times more bacteria on it than a toilet.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.