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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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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).
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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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There are 60,000 miles of blood vessels in every adult human.