In this one-reel, ten-minute entry of "The Passing Parade" series, John Nesbitt unfolds the true story of the discovery of insulin, while detailing the careers of Doctors Banting and Best wh... Read allIn this one-reel, ten-minute entry of "The Passing Parade" series, John Nesbitt unfolds the true story of the discovery of insulin, while detailing the careers of Doctors Banting and Best who have devoted their lives to developing this treatment for diabetes.In this one-reel, ten-minute entry of "The Passing Parade" series, John Nesbitt unfolds the true story of the discovery of insulin, while detailing the careers of Doctors Banting and Best who have devoted their lives to developing this treatment for diabetes.