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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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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

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A slave market in Marrakesh, Morocco. This lithograph is from the 1800s. A slave market in Marrakesh, Morocco. This lithograph is from the 1800s.
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Which of the following is not a unit factor related to a 15.0% aqueous solution Which of the following is not a unit factor related to a 15.0% aqueous solution
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Video: Steps of glucose catabolism

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