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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.
Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.