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FSU College of Medicine researcher Eric Laywell is shifting the focus from eradicating brain tumors to managing them. He has received a $430,000 grant from the National Institutes of Health to explore a new therapeutic agent and treatment method for brain cancer. The therapeutic agent Laywell and his lab are using is EdU (pronounced E-D-U). It is typically used to label and track cells that divide, but Laywell’s team discovered that over a longer period of time, EdU has a toxic effect: The cells divide more slowly and sometimes die.