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Did you know?
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.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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There are 20 feet of blood vessels in each square inch of human skin.
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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.