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Combined treatment of NIR and GEM synergistically promotes apoptosis. The cells were treated with gemcitabine for 48 h and then irradiated with a 4 Watt 915 nm laser for 7 min. After 24 h, the cells were subjected to the TUNEL assay. NIR, near-infrared radiation; GEM, gemcitabine; 4W7m, cells treated with a 4-Watt laser for 7 min. P<0.05 between NIR(−) and NIR4W7m groups.
