Figure 1From: Lung cancer stem cells and low-intensity laser irradiation: a potential future therapy?Proposed mechanism of photostimulation. Energy is absorbed from the laser light by the intracellular chromophores and converted into metabolic energy, which in turn can lead to cellular proliferation as a result of cellular responses being activated via photostimulation. ??mt, the electrical potential across the mitochondrial membrane; ER, endoplasmic reticulum; ROS, reactive oxygen species.Back to article page