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P1 stimulated apoptosis induced by TNF-α. (A) DAPI staining of HeLa cells treated with TNF-α (10 ng/mL) or P1 for 24 h. (B) Annexin V staining of HeLa cells treated with TNF-α (10 ng/mL) or P1 for 24 h. (C) PARP cleavage induced by P1 or TNFα (10 ng/mL) in HeLa cells after treatment for 24 h.
