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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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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 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.