This child was treated with insulin in 1922 by Frederick Banting and Charles Best, who a year earlier first isolated the insulin hormone for use in diabetic therapy. Only two months separate the "before" and "after" pictures

This child was treated with insulin in 1922 by Frederick Banting and Charles Best, who a year earlier first isolated the insulin hormone for use in diabetic therapy. Only two months separate the "before" and "after" pictures