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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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In 1864, the first barbiturate (barbituric acid) was synthesized.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.