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. 2011;20(3):205–215. doi: 10.5978/islsm.20.205

Fig. 2:

Fig. 2:

The process of cellular photoactivation by low level light therapy (LLLT). Visible light induces a primary photochemical response particularly associated with mitochondrial cytochrome c-oxidase, whereas near IR induces a primary photophysical response in the cellular and organelle membranes. However the eventual photoresponse is the same. (Based on data from Karu & Smith, Refs 6 & 9)