(C) An equal number of FACS-isolated SCs from Ctrl or YY1iKO mice were cultured for 48 hrs and EdU labelled for 8 hrs, followed by immunostaining for Pax7 (green) and EdU (red). Quantifications of the percentage of EdU+ cells are shown on the right (n=3 mice, each). Scale bar = 100 µm. 