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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.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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