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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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The horizontal fraction bar was introduced by the Arabs.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.