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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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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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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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Blood is approximately twice as thick as water because of the cells and other components found in it.