Fig. 4

Analysis of the cell cycle in PRP-treated and PDGF-BB-treated hASCs. Cells were incubated with PRP (1%) or PDGF-BB (10 ng/ml) in serum-free DMEM for 48 h. Cell cycle stages determined by flow cytometry. a Representative data from four independent experiments. b Cell cycle distributions in hASCs after treatment with PRP and PDGF-BB (n = 4). *P < 0.01 compared with the control. PRP platelet-rich plasma, PDGF platelet-derived growth factor