Karsh Signature

Yousuf Karsh, master photographer of the 20th century

Dr. Charles Best

Dr. Charles Herbert Best, 1958

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 – the hormone was successfully isolated on this day, July 27, in 1921.