Vaccines prevent between 2.5 and 4 million deaths every year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are more bacteria in your mouth than there are people in the world.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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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.
Antarctic blue whale
Three Main Types of Tectonic Plates Boundaries
The Main Macromolecules in Cells
Estimates of the dates of origin and extinction of the three main groups of hominins (green, blue, a
Main components of the human endocrine system and the effects of their secretions