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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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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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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.