Years after questions were raised about their integrity, two of the University of Minnesota’s highest-profile scientific discoveries have been retracted in one week—one that offered hope over the therapeutic potential of stem cells and the other that offered a promising path toward treating Alzheimer’s disease. The studies are more than a decade old and in some respects superseded by other discoveries in their fields. But the retractions of the Alzheimer’s paper on June 24, and the stem cell paper on June 17, are setbacks for an institution that has been Read More