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Did you know?
The average adult has about 21 square feet of skin.
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Approximately 25% of all reported medication errors result from some kind of name confusion.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
![Banding of an esophageal varix; A, varix; B, insertion of tube with O-ring; C, O-ring is placed arou](https://biology-forums.com/gallery/47/medium_18099_24_10_12_4_49_10.jpeg)
![Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_14_27_100261340.jpeg)