1. From the Department of Clinical Cell Biology (K.K., K.Y., M.F., H.K., Y.M., S.A., S.M., Y.S.), Chiba University Graduate School of Medicine; Division of Endocrinology and Metabolism (K.Y., Y.S.), Department of Internal Medicine, Chiba University Hospital; Department of Developmental Genetics (K.Y., A.S., T.T.), Chiba University Graduate School of Medicine, Chiba, Japan; and Shiraoka Research Station of Biological Science (M.K.), Nissan Chemical Industries, Ltd, Saitama, Japan.