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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.