Frederick Banting in the blood which was then excreted in urine. Attempts to extract insulin from ground-up pancreas cells were unsuccessful, likely because of the destruction of the insulin by the proteolysis enzyme of the pancreas. The challenge was to find a way to extract insulin from the pancreas prior to its being destroyed. Moses Barron published an article in 1920 which described experimental closure of the pancreatic duct by ligature; this further influenced Banting's thinking. The procedure caused deterioration of the cells of the pancreas that secrete trypsin which breaks down insulin, but it left the islets of Langerhans intact. Banting
Sir Frederick Banting Secondary School at the school until she was elected in the 2006 federal election. Banting shares an almost exact floor plan with its sister school, Montcalm Secondary School. Sir Frederick Banting Secondary School has produced the Canadian olympic athletes Jason Tunks, three-time Summer olympian discus-thrower, heptathlete Jessica Zelinka, and speed skater Christine Nesbitt, gold-medalist at the 2010 Winter Olympics in women's 1000 m and silver-medalist at the 2006 Winter Olympics in the women's team pursuit. Jude St. John, a Grey Cup-winning Canadian football player, also attended Sir Frederick Banting Secondary School as well as NHL players Mike Van Ryn & Steve Rucchin.