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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
There are more nerve cells in one human brain than there are stars in the Milky Way.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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