The DNA mutations that accumulate over time as women age are not the sole contributor to the higher frequency of breast cancer in women over 50, Mark LaBarge, PhD, a researcher at Lawrence Berkeley National Laboratory (LBNL) reported on Dec. 17 in a presentation at the American Society for Cell Biology Annual Meeting in San Francisco. Changes in the populations of progenitor cells in breast tissue may be a powerful and until now overlooked factor in breast cancer and aging, he said. According to U.S...
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