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Author Question: ___________________________________ show seasonal growth in trees. a. medullary rays b. ... (Read 42 times) |
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.
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.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.