Type I diabetes is a form of diabetes that is due to the loss of insulin-producing cells of the pancreas. The potential of stem cells—in particular, induced pluripotent stem (iPS) cells—for therapy has gotten a lot of press. What are iPS cells? a. cells taken from early human embryos b. cells taken from the pancreas of people without diabetes c. cells derived by de-differentiating specialized adult cells d. cells derived by differentiating pancreas precursor cells