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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
Thyroid conditions may make getting pregnant impossible.
Did you know?
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.