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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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Cyanide works by making the human body unable to use oxygen.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.