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Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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 approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.