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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Thyroid conditions may make getting pregnant impossible.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The average office desk has 400 times more bacteria on it than a toilet.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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