- 2005/08/01 - 2008/03/31 The Open University of Japan
- 2005/04/01 - 2007/03/31 Sophia University Dean of the Graduate Division of Law
- 2004/03/11 - 2007/03/31 The Japanese Society for Regenerative Medicline
- 2003/07/22 - 2006/07/21 Science Council of Japan
- 2004/04/01 - 2006/03/31 Tokyo Bar Association
- 2004/10/01 - 2005/03/31 Health Service Bureau, Ministry of Health, Labour and Welfare.
- 2004/04/01 - 2005/03/31 RIKEN
- 2004/04/01 - 2005/03/31 Keio University
- 2004/04/01 - 2005/03/31 Sophia University Director of the Institute for The Study of Social Justice
- 2003/11/01 - 2005/03/31 Japan Foundation for Neuroscience and Mental Health
- 2004/02/20 - 2005/02/20 Ministry of Health, Labour and Welfare
- 2003/01/26 - 2005/01/25 Health Service Bureau, Ministry of Health, Labour and Welfare.
- 2003/02/23 - 2005/01/09 Health Service Bureau, Ministry of Health, Labour and Welfare.
- 2003/09/01 - 2004/03/31 RIKEN
- 1999/04/01 - 2004/03/31 Graduate School of Law, Hakuoh University
- 1997/01/01 - 1998/12/31 Sophia University Dean of the Faculty of Law
- 1966/04/01 - 1969/03/31 The University of Tokyo
- Sophia University Institute of Bioethics Professor
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