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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.