Karsh Signature

Yousuf Karsh, master photographer of the 20th century

Dr. Charles Herbert Best

Dr. Charles Herbert Best, 1958

This week marks the 99th anniversary of the isolation of insulin in July, 1921. As a 22-year-old medical student at the University of Toronto, Dr. Charles Herbert Best worked as an assistant to the surgeon Dr. Frederick Banting, and contributed to the discovery of the pancreatic hormone insulin, which led to an effective treatment for diabetes.