Transplanting insulin-producing cells along with engineered blood-vessel-forming cells has successfully reversed type 1 diabetes, according to a new preclinical study. With further testing, the novel approach could one day cure the as-yet incurable condition.The pancreatic islet is the only human tissue that produces insulin in response to rising blood glucose levels. In type 1 diabetes, the immune system attacks and slowly destroys these islets, leading to insulin deficiency. Remarkable progres...