Fig. 10

Effect of PBM on the senescence of passage 6 MeSCs. Relative β-GAL levels in all PBM-treated groups were significantly lower than in the control group. Relative levels were calculated as the relative change from the control group. The experiment was performed with six replicates, and mean values were used for group comparisons. Groups were compared using either Friedman’s non-parametric test or repeated-measures ANOVA. The mean value of each irradiated group was compared with that of the control group. ns, not significant; *p < 0.05; **p < 0.01.