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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.