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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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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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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.