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Everyone has one nostril that is larger than the other.
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The human body produces and destroys 15 million blood cells every second.
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By definition, when a medication is administered intravenously, its bioavailability is 100%.
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In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.