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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.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.