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Figure 4: Immunoblot analysis showed the effects of low-power He- Ne laser irradiation on MAPK expression levels. The expression levels of p-ERK, ERK2, and p38 proteins in the (A) A549 and (B) H1299 cells that were irradiated with 4.0 mW He-Ne laser irradiations for various time courses were determined by Western blot analysis after recovery for 48 hr. The α-tubulin served as an internal control. |