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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.