The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
Amphibian development in the wood frog (Rana sylvatica)
Photograph illustrating the development of a fetus