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Images of chondrocytes transfected with HA/CS–plasmid nanoparticles, CS–plasmid nanoparticles, naked plasmid DNA and LipofectamineTM 2000 as observed under fluorescence microscope (100× magnification for (A)–(D); 200× magnification for (E)–(H)). HA/CS–plasmid nanoparticles (A and E); CS–plasmid nanoparticles (B and F); naked DNA (C and G); and LipofectamineTM 2000 (D and H) (with permission from authors and International Journal of Pharmaceutics) 95.
