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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.
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).