Fig. 2.

FACS analyses of 293-F cells transfected with PEI/Cy5-pEGFP-N1 complexes prepared in 150 mM NaCl (pH 6.8, N/P ratio 46) after transfection of 4 h and post-transfection culture of 20 h. a Percentages of Cy5-pEGFP-N1 positive cells in total populations; b average Cy5 intensities of Cy5-pEGFP-N1 positive cells; c percentages of GFP positive cells in total populations; d average GFP intensities of GFP positive cells; e ratios (R) of average GFP intensities of GFP positive cells to average Cy5 intensities of Cy5-pEGFP-N1 positive cells