Banting, Frederick Grant 1891-1941. Canadian
physician who discovered a technique for
isolating the hormone insulin in 1921 when,
experimentally, he and his colleague Charles
Best tied off the ducts of the pancreas to
determine the function of the cells known as
the islets of Langerhans. This allowed for
the treatment of diabetes. Banting and John J
R Macleod, his mentor, shared the 1923 Nobel
Prize for Medicine, and Banting divided his
prize with Best.