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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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The familiar sounds of your heart are made by the heart's valves as they open and close.