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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 first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
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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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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Vaccines prevent between 2.5 and 4 million deaths every year.