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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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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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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.