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O. volvulus is transmitted by sandflies, and their role in the transmission of onchocerciasis was discovered by the Scottish parasitologist Breadablane Blacklock in Sierra Leone in the mid-1920s (19). There are accounts of the history of onchocerciasis by Grove (105) and Muller (192).
Insulin Discovered (1922): Medical researcher Frederick Banting and research assistant Charles Best studied the islets of Langerhans in the pancreas of dogs at the University of Toronto.Banting believed that he could find a cure for the sugar disease (diabetes) in the pancreas.nsulin Discovered (1922): Medical researcher Frederick Banting and research assistant Charles Best studied the islets of Langerhans in the pancreas of dogs at the University of Toronto.