Affiliation: | a Division on Genes and Bioregulation, Department of Culture and Information, Faculty of Informatics, Teikyo Heisei University, Uruido, Ichihara, Chiba 290-01, Japan b Department of Obstetrics and Gynecology, Yamanashi Medical University, Shimokato 1110, Tamaho, Nakakoma, Yamanashi 409-38, Japan |