THIS IS THE UNCORRECTED ACCEPTED MANUSCRIPT VERSION. THE FINAL PUBLICATION IS AVAILABLE AT http://link.springer.com/article/10.1007%2Fs12015-011-9340-9 1 Adult craniofacial stem cells: sources and relation to the neural crest Barbara Kaltschmidt 1 , Christian Kaltschmidt 2 and Darius Widera 2,* 1 Molecular Neurobiology, University of Bielefeld, Universitätsstr. 25, D-33501 Bielefeld, Germany 2 Cell Biology, University of Bielefeld, Universitätsstr. 25, D-33501 Bielefeld, Germany *To whom correspondence should be addressed: Dr. Darius Widera Cell Biology, University of Bielefeld, Universitätsstr. 25, D-33501 Bielefeld, Germany E-mail: darius.widera@uni-bielefeld.de Keywords: Neural crest-derived stem cells, craniofacial regeneration, adult stem cells, multipotency, pluripotency. Conflict of interest disclosure: The authors declare no conflicts of interest.