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Increased cleavage of PARP and caspases in TAT‐treated cells. (A) Western blot of PARP and its cleavage products in HeLa cells treated with or without 25 μm TAT for each indicated time. Staurosporine was used as the positive control and tubulin as the loading control. (B) Western blots of caspase‐7 and caspase‐9 cleavage products after treatment of HeLa cells with 25 or 50 μm TAT for 48 h.
