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Investigation of the cell-killing mechanism of X-PDT. (A) Apoptosis and necrosis assay performed 24 h after X-PDT. (B) Lipid peroxidation assay. (C) Comet assay. (D) Western blot assay. H1299, a radioresistant non-small cell lung cancer cell line was employed. Adapted with permission from Ref 16. Copyright 2016 Ivyspring Publisher.
