MADISON, Wis., July 22 /PRNewswire/ -- Cellular Dynamics International (CDI) announced today the appointment of Junying Yu, Ph.D., as senior research fellow. Her significant body of published research has shown her to be one of the leading stem cell researchers in the world. Dr. Yu's scientific leadership will help to accelerate the company's efforts toward harnessing the power of induced pluripotent stem (iPS) cells to reproducibly differentiate into essential cell types for drug discovery and development and eventually therapeutic use.