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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
There are more nerve cells in one human brain than there are stars in the Milky Way.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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