Yoshio Masui

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Yoshio Masui
増井 禎夫

(1931-01-01) January 1, 1931 (age 88)
Kyoto, Japan
Nationalitynaturalized Canadian
Alma materKyoto University
Known forpioneering work on cell division
Scientific career

Yoshio Masui (増井 禎夫, Masui Yoshio, born in Kyoto, Japan, January 1, 1931) is a Japanese / Canadian cell biologist.[1] Masui retired in 1997 and has since held the position of Professor Emeritus at the University of Toronto.[2][3]


Masui studied biology at Kyoto University, graduating with his Bachelor of Science degree in zoology in 1953, his Master of Science in 1955 and his Ph.D. in 1961.[citation needed]

Career and research[edit]

While still studying at Kyoto University, he taught biology, first as a teacher's assistant and then as a teacher, at Konan University, where he was promoted to Assistant Professor after his earning his Ph.D. In 1966, he moved to Yale University to join Clement L. Markert's lab, and in 1969 to the University of Toronto, where he taught as Associate Professor in the Department of Zoology.[citation needed]


In 1998, he won the Albert Lasker Award for Basic Medical Research with Lee Hartwell and Paul Nurse for their pioneering work on cell division.[4] He was elected a Fellow of the Royal Society (FRS) in 1998[5] and an officer of the Order of Canada in 2003 in recognition of his life's work. in 1992 he was awarded the Gairdner Foundation International Award.


  1. ^ Nurse, Paul (1998). "Yoshio Masui and cell cycle control, past, present and future". Biology of the Cell. 90 (6–7): 447–452. doi:10.1111/j.1768-322X.1998.tb01053.x. ISSN 0248-4900.
  2. ^ "Yoshio Masui". Department of Cell & Systems Biology, University of Toronto. 2008. Archived from the original on 2008-05-09.
  3. ^ Lohka, Manfred (1998). "A tribute to Yoshio Masui". Biology of the Cell. 90 (6–7): 445–446. doi:10.1111/j.1768-322X.1998.tb01052.x. ISSN 0248-4900.
  4. ^ "Albert Lasker Award for Basic Medical Research - Lee Hartwell, Yoshio Masui, and Paul Nurse". The Lasker Foundation. Archived from the original on 2012-02-23.
  5. ^ "Fellows of the Royal Society". London: Royal Society. Archived from the original on 2015-03-16.