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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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Vaccines prevent between 2.5 and 4 million deaths every year.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
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Thyroid conditions may make getting pregnant impossible.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.