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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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The longest a person has survived after a heart transplant is 24 years.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.