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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The human body produces and destroys 15 million blood cells every second.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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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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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.