Affiliation: | From the ‡Graduate School of Science, Chiba University, 1-33 Yayoicho, Inage-ku, Chiba 263-8522, ;the §Division of Biochemistry, Chiba Cancer Center Research Institute, 666-2 Nitona, Chuoh-ku, Chiba 260-8717, and ;the ¶Department of Developmental Genetics, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan |