Resveratrol pretreatment affects cell proliferation rate of hMSCs in both time and dosage dependent manner.

<p><b>A</b>). Duplicate wells of cells pretreated with resveratrol or BM for 0 (0D-PT), 12 (12D-PT) or 30 (30D-PT) days, followed by 6 (0D-PT) or 5 (12D-PT & 30D-PT) more days of treatment respectively after similar density plating were fixed and stained at 6 or 12 hrs post EdU addition. Cells labeled with EdU were green (indicated by arrows) whereas unlabeled cells appeared grey from Hoescht 33342 staining (image taken using UV/Blue dual filter at 200× magnification). <b>B</b>). Percentages of green cells were normalized to the value in the BM treated cells. Error bars represent standard deviation. *: p<0.05 vs. BM.