The Discovery and Early Development of Insulin

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Interactive Timeline

This section presents a chronological summary of the discovery and development of insulin as a pharmaceutical product. The timeline covers the initial isolation and experimental testing of pancreatic extract in Toronto in the summer of 1921, the work leading to the refinement and large-scale production of insulin and its application in clinical practice through 1923, to the commercial manufacture of the product and its rapid world-wide dissemination by 1926.