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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The human body produces and destroys 15 million blood cells every second.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.