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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.
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There are more bacteria in your mouth than there are people in the world.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.