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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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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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There are more sensory neurons in the tongue than in any other part of the body.