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Did you know?
There are 60,000 miles of blood vessels in every adult human.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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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.
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There are more bacteria in your mouth than there are people in the world.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.