Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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).
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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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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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
The Basics of Digestion
Carbohydrate Digestion and Absorption
Fat Digestion and Absorption
Pancreas: Digestion Wunderkind
The Small Intestine: A Huge Surface for Digestion & Absorption