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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.
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There are 20 feet of blood vessels in each square inch of human skin.
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Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.