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Did you know?
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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People about to have surgery must tell their health care providers about all supplements they take.
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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.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
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.

