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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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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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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

Good computer skills are now required to be a successful member of an office staff. Good computer skills are now required to be a successful member of an office staff.
Apple Corporation, Macintosh computer, Cupertino, California. Apple Corporation, Macintosh computer, Cupertino, California.
Medical assistant uses a laptop computer for bedside charting. Medical assistant uses a laptop computer for bedside charting.
Color monitor for a computer system. Color monitor for a computer system.
DNA-Z computer model DNA-Z computer model
The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella The bacterium Escherichia coli is commonly referred to as E. coli. Seen here with multiple flagella
Video: Type of Transport - Active and Passive Processes

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