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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
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The average office desk has 400 times more bacteria on it than a toilet.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.