Department of Biotechnology Research, Kazusa DNA Research Institute, Kisarazu, Chiba, Japan.|Department of Biotechnology Research, Kazusa DNA Research Institute, Kisarazu, Chiba, Japan.|Department of Biotechnology Research, Kazusa DNA Research Institute, Kisarazu, Chiba, Japan.|Department of Biotechnology Research, Kazusa DNA Research Institute, Kisarazu, Chiba, Japan.