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Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.