Leonard Thompson (diabetic)
Thompson received his first injection in Toronto, Ontario, on January 11, 1922, at 14 years of age. The first injection had an apparent impurity which was the likely cause for the allergic reaction he displayed. After a refined process was developed by James Collip to improve the canine pancreas extract, the second dosage was successfully delivered to the young patient twelve days after the first.
Until insulin was made clinically available, a diagnosis of Type 1 diabetes was an invariable death sentence, more or less quickly (usually within months, and frequently within weeks or days).
- Elizabeth Hughes Gossett, first person treated in US
- Frederick Banting
- Islets of Langerhans
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