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Did you know?
More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Blood is approximately twice as thick as water because of the cells and other components found in it.