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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Did you know?
There are more bacteria in your mouth than there are people in the world.