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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Blood is approximately twice as thick as water because of the cells and other components found in it.
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