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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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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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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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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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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.