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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Cyanide works by making the human body unable to use oxygen.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
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Blood is approximately twice as thick as water because of the cells and other components found in it.