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The average adult has about 21 square feet of skin.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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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 most common treatment options for addiction include psychotherapy, support groups, and individual counseling.
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.