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Dr. Michael Hardacre is the medical director of Radiation Oncology at the Renown Institute for Cancer. He's answering questions about breast cancer in tonight's Ask the Doctor segment.

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A New Orleans area scientist is making news around the world with a major discovery about night light - and breast cancer. His study suggests that your sleep habits may play a major role in treating breast cancer.

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Researchers are reporting great success with an experimental gene therapy to treat advanced leukemia. Patients are given genetically modified versions of their own immune cells.