1. From the Department of Medicine and Clinical Science (D.T., M.S., K.H., N.O., N.T., K.N.), Kyoto University Graduate School of Medicine; the Department of Stem Cell Biology (K.T., S.Y.), Institute for Frontier Medical Sciences, Kyoto University; and the Center for iPS Cell Research and Application (CiRA) (K.T., S.Y.), Institute for Integrated Cell-Material Sciences, Kyoto University, Japan.