The surface markers of cultured C-MSC are characterized by flow cytometry analyses with a BD LSRII flow cytometer and BD FACSDiva™ software as previously described[27 (link)]. Briefly, C-MSCs were blocked with 5% rat serum and stained with a panel of conjugated antibodies, including anti-CD105-APC (BioLegend), anti-CD140-PE (eBioscience) and anti-CD117-FITC (BD Biosciences Pharmingen).