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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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Asthma cases in Americans are about 75% higher today than they were in 1980.