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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.
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The human body produces and destroys 15 million blood cells every second.
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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.