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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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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Medication errors are more common among seriously ill patients than with those with minor conditions.