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Effect of TP/HCPT treatment on the apoptosis-associated proteins in A549 cells. A549 cells under various treatments were harvested for examining the associated protein levels. (A) Mitochondrial apoptotic pathway detected by antibodies against caspase-3, -9, cytochrome c, Bax and Bcl-2. (B) ER stress apoptotic pathway detected by antibodies against caspase-12, GRP78 and CHOP. β-actin was used as an internal control.
