FIGURE 6.

Effects of PMSCs-CM on the wound healing and PCNA expression of chondrocytes. (A) Wound healing assay of chondrocytes with PMSCs-CM treatment at 0 h, 24 h and 48 h. Scale bars = 200 μm; (B) Quantification of blank area ratio from 24 h to 0 h and from 48 h to 0 h; (C) Cell immunofluorescence assay of chondrocytes at 24 h after PMSCs-CM treatment; (D) Quantification of cell ratio (PCNA-expressed cell number/total cell number). Values were presented as mean ± SD. ^## p < 0.01 vs. NC group; **p < 0.01 vs. Model group. All experiments were repeated at least three times.