Charles Best (medical scientist) the pancreatic extract and monitoring glucose levels, MacLeod assigned the biochemist James Collip to the team. In January 1922, while Collip was working on insulin purification, Best and Banting administered prematurely their pancreatic extracts to 14-year-old Leonard Thompson, who suffered a severe allergic reaction. Eventually, Collip succeeded in preparing insulin in a more pure, usable form. Banting, Best and Collip shared the patent for insulin, which they sold to the University of Toronto for one dollar. In 1923, the Nobel Prize Committee honoured Banting and J. J. R. Macleod with the Nobel Prize in Medicine for the discovery of insulin,
Frederick Banting Territories), Georgian Bay, French River and the Sudbury District. Banting married twice. His first marriage was to Marion Robertson in 1924; they had one child, William (born 1929-, died 1998). They divorced in 1932 and Banting married Henrietta Ball in 1937. In February 1941, Banting died of wounds and exposure following the crash of a Lockheed L-14 Super Electra/Hudson in which he was a passenger, in Musgrave Harbour, Newfoundland. After departing from Gander, Newfoundland, both of the plane's engines failed. The navigator and co-pilot died instantly, but Banting and the pilot, Captain Joseph Mackey, survived the initial impact. According to