sentences:  Those problems did not rise to the level of academic misconduct, the university said.It did not find fault directly with Verfaillie, but Tim Mulcahy concluded that the “message here is that everyone needs to fulfill their responsibility to the public and to science”.In response to the investigation at the University of Minnesota, "Nature" instituted their own investigation to the 2002 controversial paper and Verfaillie was allowed to make a Corrigendum to the original paper, which did not acknowledge fabrication of data, and claimed that the original observation still held.