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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
More than 4.4billion prescriptions were dispensed within the United States in 2016.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Did you know?
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
Did you know?
The average adult has about 21 square feet of skin.


