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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?
Everyone has one nostril that is larger than the other.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
By definition, when a medication is administered intravenously, its bioavailability is 100%.
Did you know?
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.