Diabetes refers to a condition in which the body cannot produce insulin hormone or the body cells are resistant to its effects. In type I diabetes, your pancreas does not produce enough insulin to keep blood sugar within its required range. In type II diabetes, insulin production is abnormal, and the cells of the body cannot properly use the hormone to regulate blood sugar. Studies in Canada and the United States found that when stem cells were injected into the bloodstream of diabetic mice, they found their way to the damaged pancreas, where they could promote the growth of new cells. Diabetes symptoms were reverted two weeks after the mice received injections of bone marrow stem cells. Their high blood sugar levels were reduced to almost normal values and insulin levels increased. Even more interesting is that cell growth was not produced by the injected cells but the injected stem cells triggered the production of cells in the pancreas of the receptor.