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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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Medication errors are three times higher among children and infants than with adults.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.