- 2021/04 - 現在 Teikyo University, Advanced Comprehensive Research Organization Director and Research Professor
- 2015/10 - 現在 Japan Society for the Promotion of Science Executive Director
- 2015 - 現在 National Institute of Advanced Industrial Science and Technology Emeritus fellow
- 2008/09 - 現在 Yokohama City University Emeritus Professor
- 2007/06 - 現在 The University of Tokyo Emeritus Professor
- 2011/10 - 2015/09 Japan Society for the Promotion of Science Executive Director
- 2010/04 - 2015/03 University of Tsukuba Director, Life Science Center of Tsukuba Advanced Research Alliance
- 2010/04 - 2015/03 National Institute of Advanced Industrial Science and Technology Director of Research Center for Stem Cell Engineering
- 2006/04 - 2015/03 National Institute of Advanced Industrial Science and Technology Emeritus fellow and Director
- 2008/10 - 2012/10 International Association of University (IAU) Executive Director
- 2009/04 - 2012/03 Japan Science and Technology Agency Cernter for Research and Development Strategy Principal fellow
- 2005/09 - 2011/08 Science Council of Japan Vice President
- 2007/04 - 2009/03 Univrersity of Tokyo Managing Director, Executive Vice President
- 1995/04 - 2007/03 The University of Tokyo, Graduate School of Arts and Sciences Professor
- 2006 - 独立行政法人産業技術総合研究所 器官発生工学研究ラボ長
- 2003/02 - 2005/02 The University of Tokyo Dean and Head at Graduate School of Arts and Science
- 2005 - 東京大学大学院総合文化研究科生命科学構造化 センター長
- 2005 - 東京大学生命学科 教育支援ネットワーク長
- 1996 - 東京大学大学院総合文化研究科 評議員(併任)
- 1993/04 - 1995/03 The University of Tokyo, Faculty of Arts and Sciences Professor
- 1995 - The University of Tokyo
- 1985/01 - 1993/03 Yokohama City University Professor
- 1974/10 - 1985/12 Yokohama City University, Faculty of Arts and Sciences associate professor
- 1972/04 - 1974/09 Free University of Berlin (Germany, ) , Institute of Molecular biology, Research Assistant
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