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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.
More than 4.4billion prescriptions were dispensed within the United States in 2016.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.