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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.
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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.