Frederick Banting upon the idea of obtaining insulin from the fetal pancreas. He removed the pancreases from fetal calves at a William Davies slaughterhouse and found the extracts to be just as potent as those extracted from the dog pancreases. By December 1921, he had also succeeded in extracting insulin from the adult pancreas. Pork and beef would remain the primary commercial sources of insulin until they were replaced by genetically-engineered bacteria in the late 20th century. In spring of 1922, Banting established a private practice in Toronto and began to treat diabetic patients. His first American patient was Elizabeth Hughes Gossett,
Frederick Banting was created in 1925 and provides funding to support health and biomedical research in Canada. Banting's name is immortalised in the yearly Banting Lectures, given by an expert in diabetes, and by the creation of the Banting and Best Department of Medical Research of the University of Toronto; Sir Frederick G Banting Research Centre located on Sir Frederick Banting Driveway in the Tunney's Pasture complex, Ottawa, ON; Banting Memorial High School in Alliston, ON; Sir Frederick Banting Secondary School in London, ON; Sir Frederick Banting Alternative Program Site in Ottawa, ON; Frederick Banting Elementary School in Montréal-Nord QC and École