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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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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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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").