Bachelor of Science, Ibaraki University, Japan, 1966.
Assistant professor University Massachusetts Medical School, Worcester, 1980—1986, associate professor, 1986—1992. Principal investigator National Institute Infectious Diseases, Tokyo, 1992—1996. Professor Faculty Medicine School Life Science, Tottori University, Yonago, since 1996, director, since 2007.
Member of International Association Research Epstein-Barr Virus & Associated Diseases, Japanese Cancer Association, Japanese Society Virology.