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Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
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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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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
![(A) A 62-year-old patient with myxedema exhibiting marked edema of the face and a somnolent look. Th](https://biology-forums.com/gallery/47/medium_14755_07_10_12_2_58_08_93192222.jpeg)
![The Black Death spread over much of Europe in a three-year period in the middle of the fourteenth ce](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_45_11_208612424.jpeg)