(H) An equal number of FACS-isolated SCs from Ctrl or YY1iKO mice were cultured for 24hrs and EdU labeled for 12 hrs, followed by immunostaining for Pax7 (green) and EdU (red) was performed. Quantifications of the percentage of EdU+ cells are shown on the right (n=3 mice, each). Scale bar = 100 µm. 