Beginning of Essay
Three Toronto scientists have developed an organ transplant procedure that could, among its many benefits, reverse diabetes. The procedure was developed by Bernard Leibel, Julio Martin and Walter Zingg at the University of Toronto and the Hospital f ....

Middle of Essay
.... donor rats for one year while a control group was left untreated. Then both the treated and control groups received injections of approximately 500-800 islets of Langerhans from unrelated donors. Of the five treated animals, two became clinically and biochemically permanently normal. Six months later, Martin examined the cured rats and found intact, functioning islets secreting all of their hormones, including insulin. None of the controls were cured. Encouraged by their first results, Leibel, Martin, and Zingg decided to repeat the experiment with rats with much stronger immune barriers (higher levels of rejection). Seven rats out of nine were cure ....