Wan Jin's assistant when he discovered insulin was
Charles best. 189 1 year found that thyroid extract can treat myxedema caused by hypothyroidism. Therefore, islet extract can also be used to treat diabetes. 192 1 year, Wan Jin came to the University of Toronto and found mcleod, a professor of physiology, to explain his experimental ideas. Mcleod promised Wanjin several laboratories and called Charles Best's intern an assistant.