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Did you know?
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.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.