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In 1864, the first barbiturate (barbituric acid) was synthesized.
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As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
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There are 60,000 miles of blood vessels in every adult human.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.