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Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.
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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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The human body produces and destroys 15 million blood cells every second.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.