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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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