Expression of stem cell markers for BMSCs and MMSCs. Both types of MSCs exhibited high expression of stem cell markers, SSEA-4 (A, B), Nanog (C, D), and nucleostemin (E, F), respectively. Insets show enlarged view of positive staining with three stem cell markers. There was no great difference in the expression of these three recognized stem cell markers. (Magnification of microscopy: 20×) (Bar: 50 μm).