Michel M.J. Modo, Ph.D. , a Luxembourg native, is a Research Council of the United Kingdom (RCUK) fellow and Wolfson lecturer in stem cell imaging at the Centre for the Cellular Basis of Behaviour and the Medical Research Council (MRC) Centre for Neurodegeneration Research at the Institute of Psychiatry (IoP), King's College London. Dr. Modo graduated from Royal Holloway University of London with a degree in psychology and in 1995 spent 1 year as an undergraduate in the psychology department at McGill University in Montreal, Canada. In 2001, he earned his Ph.D. at the IoP and has since been interested in the application of molecular and cellular imaging to understand how stem cells promote functional recovery after brain damage., Jeff W.M. Bulte, M.D., also a native from the Benelux (the Netherlands), is a professor of radiology in the Division of MR Research and is director of the cellular imaging section at the Institute for Cell Engineering, Johns Hopkins University School of Medicine. In 1991, Dr. Bulte graduated summa cum laude in medicine/immunoloy from the University of Groningen, and he spent 10 years in the Laboratory of Diagnostic Radiology Research at the National Institutes of Health before moving to Hopkins in 2001. His research specializes in molecular and cellular MR imaging.