御茶水女子大學
In 1929, Yasui founded the cytology journal "Cytologia". From 1924 onwards, she researched the genetics of poppies, corn and "Tradescantia" species, and in 1945 she began a survey of plants that had been affected by nuclear fallout after the atomic bombings of Hiroshima and Nagasaki. When Ochanomizu University was established under its current name in 1949, Yasui was appointed professor. She retired in 1952, becoming a professor emerita. By 1957 she had published a total of 99 scientific papers.