In 1864, the first barbiturate (barbituric acid) was synthesized.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
The reflection nebula NGC 1999 is brilliantly illuminated by V380 Orionis (center), a variable star
Nursing history for nail assessment
Nurising history for heart assessment
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Created Equal: A Social and Political History of the United States, Brief Edition