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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.