Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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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 1864, the first barbiturate (barbituric acid) was synthesized.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
Stem cells
ON and OFF Ganglion Cells
Electron micrograph of the plasma membranes of two cells showing the glycocalyx.