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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
Did you know?
The human body produces and destroys 15 million blood cells every second.
Did you know?
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
Did you know?
Cyanide works by making the human body unable to use oxygen.