Yoshio Masui

Professor Emeritus
Education: 
MSc, PhD, O.C., FRS, FRSC, Hon. DSc
Office phone: 
416-978-3493
Fax: 
416-978-8532
Office: 
RW 601D

yoshio [dot] masui (at)utoronto [dot] ca

Address: 

Department of Cell & Systems Biology
University of Toronto
25 Harbord Street
Toronto, Ontario
Canada M5S 3G5

Research: 

Professor Masui has studied nucleocytoplasmic interactions during oocyte maturation and early development in the frog and mouse. Using microinjection techniques and a cell-free system, he and his colleagues showed that changes in nuclear activities during oocyte meiosis and mitosis are controlled by two protein factors in the cytoplasm, maturation promoting factor (MPF) and cytostatic factor (CSF).