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. 2013 Jun 7;8(6):e66416. doi: 10.1371/journal.pone.0066416

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© 2013 Wu et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(A) Images show Bel-7402 cells incubated with: RGD-PEG-g-PEI-SPION/siRNA, PEG-g-PEI-SPION/siRNA, RGD-PEG-g-PEI-SPION/siNC or PEG-g-PEI-SPION/siNC (×200; scale bar:100 µm) (B) Percentage of apoptotic cells induced by various complexes at N/P ratio of 10 as quantified by TUNEL analysis (means±SD; n = 3; *p<0.05, compared with RGD-PEG-g-PEI-SPION/siRNA; Control: the cells without transfection).