Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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The human body produces and destroys 15 million blood cells every second.
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The average adult has about 21 square feet of skin.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
Fluid compartments in a typical vertebrate.
Diagram of a typical prokaryotic cell
Typical Soil Profile
Coolant flow through a typical engine cooling system.
The sensing wire in a typical hot wire mass air flow sensor.