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Did you know?
There are more bacteria in your mouth than there are people in the world.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.