1. From the Department of Medicine and Clinical Science (M.S., H.I., K.Y., T.Y-K., A.N., T-H.C., Naok.S., Y.F., K.M., K.P., N.O., Naoy.S., D.T., N.T., K.N.), Kyoto University Graduate School of Medicine, Kyoto, Japan; Department of Internal Medicine (H.I.), Keio University School of Medicine, Tokyo, Japan; Laboratory of Stem Cell Differentiation (J.K.Y.) and Laboratory of Embryonic Stem Cell Research (H.S.), Stem Cell Research Center, and Department of Development and Differentiation (N.N.), Institute...