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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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There are more bacteria in your mouth than there are people in the world.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.