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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
The human body produces and destroys 15 million blood cells every second.
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