Low Reactive Level Laser Therapy for Mesenchymal Stromal Cells Therapies

Figure 1

(a) The beam profile of the blue laser (wavelength: 405 nm) used in this study (scale bars: 200 µm). MSCs were irradiated for 180 sec at various laser power levels. (b) Alizarin red S staining of irradiated MSCs (magnification 50x; scale bars: 400 µm). After laser irradiation, calcium deposition had increased around the cells in a dose-dependent manner. (c) The quantitative calcium content increased after blue laser irradiation (day 14) relative to nonirradiated cells. Calcium content increases varied with laser energy level (, indicating significant difference between the calcium content of laser-irradiated MSCs and controls) [3].

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