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The gene expression results after co-cultured the nano-vector with Hek 293 cell for 36 h. i) EGFP+CPNPs, ii) DsRed+CPNPs, iii) EGFP+Lipofectamine 2000, iv) DsRed+Lipofectamine 2000. Pictures from left to right are the bright-field, fluorescence and merged microscopic images respectively.
