Diabetes mellitus is a severe and debilitating chronic disease that develops in nearly 5 percent of the world’s population. People with this disease have a shortage of insulin or a reduced ability to use insulin, the hormone regulating blood glucose levels, which is normally produced by the pancreas. In the United States alone, an estimated 18 million people have diabetes, and each year about 1 million Americans are diagnosed with the disease. It is the sixth leading cause of death in the US and is responsible for over 200,000 deaths a year. Insulin-dependent (type I) diabetes accounts for around 10% of diabetics. For those patients, suffering from an inability of their pancreas to produce insulin, the only practical treatment possible is regular insulin replacement by multiple daily injections. Transplantation of a pancreas or pancreatic tissue would be beneficial to millions of such patients in that it would restore their normal ability to produce self insulin. Transplantation of human pancreas or pancreatic islets is a practiced and time-honored such therapeutic approach, but is extremely limited by the severe shortage of human donor organs. Tissera's R&D efforts in this domain are directed towards the development of a universally available and reliable source of animal fetal donor pancreatic precursor tissue, suitable for transplantation and eventual normal structural and functional growth in human diabetics.