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Intracellular protein delivery. Intracellular delivery of caspase 3 in MCF-7 cells after 48 h incubation at a fixed PTX concentration of 10 μg/mL and caspase-3 concentration of 76 nM. (A) WB assay: (1) saline, (2) CLG, (3) naked caspase 3, (4) Taxol, (5) PNPs, (6) PNPplex, (7) HA-PNPplex, (8) PUL, (9) PULplex. (B) Quantitative analysis (n = 3, *P < 0.05 and ***P < 0.001).
