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Grey's Anatomy

Scientific ResearchTelevisionExercise PhysiologyPatrick Dempsey
Grey's Anatomy (ABC) Returns Thursday, April 24 at 9 p.m. So Far This Season: Meredith (Ellen Pompeo) and Derek (Patrick Dempsey) have continued their rocky ride, with the latest bump coming in the form of surgical nurse Rose (Lauren Stamile). George (T.R. Knight) and Izzie (Katherine Heigl)... 'Grey's Anatomy' photo courtesy of ABC.