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1922 - Agreement on manufacture and sale of insulin

August and Marie Krogh return to Denmark from their United States trip. Shortly thereafter, August Krogh and diabetes specialist Hans Christian Hagedorn, who is also Marie Krogh’s physician and with whom she corresponded about the visit to Toronto, agree to develop, manufacture and sell insulin with August Kongsted, the owner of Løvens kemiske Fabrik and Løve Apotek.