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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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Vaccines prevent between 2.5 and 4 million deaths every year.