Fig. 1From: Hypoxic condition enhances chondrogenesis in synovium-derived mesenchymal stem cellsHypoxia stimulates proliferation and colony-forming characteristics of SDSCs. The SDSCs were cultured for 21Â days under normoxic (21% oxygen) or hypoxic (5% oxygen) conditions. (a)Total cell counts of were calculated by using trypan blue staining. (b) CFU-F assay was performed to determine the effect of oxygen tension on colony-forming characteristics of SDSCsBack to article page