Research Article
Effect of 660 nm Light-Emitting Diode on the Wound Healing in Fibroblast-Like Cell Lines
Figure 5
L929 cell proliferation as a function of the red LED illumination time and intensity. The cell proliferation was examined at 24 h after LED light exposure on L929 cell and expressed as a percentage of the control value. The optimal dose was 5.5 mW/cm2 for 20 min.