Fig. 6.
Histogram of protein fractions for EGFP and EYFP transfected by a 1:1 lipoplex (pEGFP)/lipoplex (pEYFP) mixture. The histogram representing the probability distribution contains protein expression fraction from 140 cells with a bin resolution of 0.05. The y-axis represents the number of cells with a protein expression fraction fP normalized by the number of cells sampled. A protein fraction of 0 represents a cell expressing only EGFP and a value of 1 represents a cell expressing only EYFP.