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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Did you know?
Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

