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Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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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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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
![Left: This web was woven by a 17-day-old spider, showing regular patterns. Right: This web was woven](https://biology-forums.com/gallery/47/medium_12359_03_04_12_3_07_11.jpeg)
![Clockwise from above left: Green turtle (Chelonia mydas), Tuatara (Sphenodon punctatus), Nile Crocod](https://biology-forums.com/gallery/47/medium_27759_23_04_12_7_58_52.jpeg)