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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.