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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.
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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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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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