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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?
Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.

