Fig. 2

miR-218 was upregulated in SDSCs early in chondrogenesis but downregulated in later chondrogenesis. Expression of 6 miRNAs, miR-140, miR-199a, miR-365, miR-675, miR-145 and miR-218, was determined using quantitative real-time PCR on days 0, 7, 14, 21 and 28 of chondrogenic differentiation. The expression levels of miRNA were normalized to those of U6. The data are presented as the means ± SDs (n = 3). *P < 0.05 vs. Day 0, **P < 00.01 vs. Day 0