Charles Best (medical scientist) Banting and contributed to the discovery of the pancreatic hormone insulin, which led to an effective treatment for diabetes. In the spring of 1921, Banting travelled to Toronto to visit J.J.R. Macleod, professor of physiology at the University of Toronto, and asked Macleod if he could use his laboratory to isolate pancreatic extracts from dogs. Macleod was initially sceptical, but eventually agreed before leaving on holiday for the summer. Before leaving for Scotland he supplied Banting with ten dogs for experiment and two medical students, Charles Best and Clark Noble, as lab assistants. Since Banting required only one assistant, Best
Charles Best (medical scientist) ignoring Best and Collip. Banting chose to share half of the prize money with Best. The key contribution by Collip was recognised in the Nobel speech of McLeod, who also gave one-half of his prize money to Collip. Best succeeded Macleod as professor of physiology at University of Toronto in 1929. During World War II he was influential in establishing a Canadian program for securing and using dried human blood serum. In his later years, he was an adviser to the Medical Research Committee of the United Nations World Health Organization. Best was elected a foreign member of the Royal