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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
![Abundant cave art after about 30,000 years ago is evidence of the importance of symbolic behavior fo](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_03_15_208321215.jpeg)
![This engraving of the Boston Massacre (1770) became the most reprinted depiction of the event, and p](https://biology-forums.com/gallery/47/medium_374628_15_08_15_11_50_51_22235741.jpeg)