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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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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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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.