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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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People about to have surgery must tell their health care providers about all supplements they take.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.