Resveratrol exerts dosage dependent enhancing vs. inhibitory effect on the self-renewal rate of hMSCs.

<p><b>A</b>). Cells were plated at equal density and cultured in different concentrations of resveratrol continuously for 36 days during which cells were counted and split at equal ratio every 6 days. *: p<0.01. <b>B</b>). Cells pretreated with resveratrol or BM for 0 (0D-PT), 9 (9D-PT), 12 (12D-PT) or 30 (30D-PT) days were seeded at 8000 cells/well and continued to culture in corresponding media until resazurin assay. Error bars represent standard deviation (triplicates in each treatment condition). *: p<0.05 vs. BM.