Fig. 4.

Increased proliferation of green OLED-treated hADSCs. a KI67 staining (blue: nuclei, green: KI67, scale bar = 50 µm) of hADSCs at 0, 24, and 48 h after green OLED irradiation for 24 h with quantification results (n = 6). b Western Blot analysis of KI67 expression in hADSCs at 0, 24, and 48 h after green OLED irradiation for 24 h. c Gene expression levels of C-MYC in hADSCs at 0, 24, and 48 h after green OLED irradiation for 24 h as evaluated by qRT-PCR (n = 5). d Cell proliferation of hADSCs at 0, 24, and 48 h after green OLED irradiation for 24 h as measured by CCK-8 assay (n = 5). *p < 0.05; **p < 0.001 compared to no treatment group with unpaired t test