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The familiar sounds of your heart are made by the heart's valves as they open and close.
There are more bacteria in your mouth than there are people in the world.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Everyone has one nostril that is larger than the other.
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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