|
|
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.
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.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
If you could remove all of your skin, it would weigh up to 5 pounds.
![Nephroblastoma. A sectioned kidney reveals the presence of a very large tumor, which arose from feta](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_19_56_9663363.jpeg)
![With the vehicle raised one foot (30 cm) off the ground, push down on the vehicle to check if it ...](https://biology-forums.com/gallery/29/medium_548020_25_05_17_2_59_26_29501121.png)