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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.