Fig. 2
The cell viability of HDF treated with different concentrations of GA in pre (a), and post (b) red light irradiation. The cell viability of A375 cells treated with different concentrations of GA in pre (c), and post (d) red light irradiation. Low-level laser irradiation was used with 3 J/cm2 for 90 s. The results are expressed as the mean ± SD (n = 3), *P < 0.05 compared with control (untreated) group