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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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Everyone has one nostril that is larger than the other.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.