Arnold Caplan, Ph.D. is Professor of Biology and the Director of the Skeletal Research Center at Case Western Reserve University. He received his B.S. in Chemistry from Illinois Institute of Technology, Chicago, and his Ph.D. from Johns Hopkins University School of Medicine. Dr. Caplan did a Postdoctoral Fellowship in Anatomy at Johns Hopkins University, followed by Postdoctoral Fellowships at Brandeis University with Dr. N.O. Kaplan and Dr. E. Zwilling. He joined the Case Western Reserve University Biology faculty in 1969, becoming a full Professor in 1981. His awards include the Elizabeth Winston Lanier Award given by the American Academy of Orthopaedic Surgeons Kappa Delta Awards Program (1990), the Marshall R. Urist Award for Excellence in Tissue Regeneration Research from the Orthopaedic Research Society (1999), and the Genzyme Lifetime Achievement Award from the International Cartilage Repair Society (2007). He was Visiting Professor in Biochemistry and Biophysics at the University of California, San Francisco Medical School (1973) and Edna and Jacob Michael Visiting Professor of Biophysics at the Weizmann Institute of Science in Rehovot, Israel (1984). In 1976 Prof. Caplan was in the Laboratory of Pierre Chambon at the Institute de Chimie Biologique, Faculty of Medicine de Strasbourg. A national and international scholar focusing on experimentation in musculoskeletal and skin development, he has trained over 125 researchers and published over 350 papers and manuscripts. His pioneering research on Mesenchymal Stem Cells has been supported by the National Institutes of Health and other non-profit and for-profit agencies.