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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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On average, the stomach produces 2 L of hydrochloric acid per day.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.