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Portrait of Sir Frederick Banting (1891-1941), Nobel laureate and co-discoverer of insulin. Banting gained his medical degree from Toronto in 1916. In 1921 he devised a method of obtaining the hormone present in the islets of Langerhans in the pancreas, thought to be connected with diabetes mellitus. Professor J.McLeod at Toronto gave Banting laboratory space and an assistant, C.H.Best, whilst McLeod went on holiday. In 1922, Banting and Best isolated the hormone insulin, and proved its connection with diabetes. Banting and McLeod won the 1923 Nobel prize, Banting sharing his half with Best who he felt had been cheated. Banting died in 1941 in a military air crash.
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