Maud Menten occupation physician
Early life and work
Menten was born in Port Lambton, Ontario, Canada. Her family moved to Harrison Mills, British Columbia, where her mother worked as a postmistress. After completing secondary school, Menten attended the University of Toronto where she earned a bachelor of arts degree in 1904 and a master's degree in physiology in 1907. While earning her graduate degree, she worked as a demonstrator in the physiology laboratory at the university.
Menten wanted to further her medical research, but found that opportunities for women in Canada were scarce at the time. As a result, she accepted a fellowship at the Rockefeller Institute for Medical Research and left Canada, arriving in New York City in 1907. There she studied the effect of radium bromide on cancerous tumors in rats. Menten and two other scientists published the results of their experiment, authoring the first monograph published by Rockefeller Institute. Menten worked as an intern at the New York Infirmary for Women and Children. After a year at the Institute, Menten returned to Canada and began her studies at the University of Toronto where, in 1911, she became one of the first Canadian women to qualify as a medical doctor.The Michaelis-Menten Equation
In 1912, Menten returned to medical research, working with renowned surgeon George Crile, in whose honour the Crile crater on the Moon is named. Their work concentrated on the control of acid-base balance during anaesthesia. Around this time she became acquainted with Leonor Michaelis, who was one of the world's leading experts in pH and buffers. Menten became attracted to early work of Michaelis in enzyme kinetics. Despite his modest laboratory establishment in Berlin, she made the difficult decision to cross the sea to work with Michaelis. 
Menten and Michaelis used an equation to express the relationship they were investigating:
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