Figure 4

Examples for the differentiation of different cell stages. (a) Fluorescence signals of the three different cell stages with a color histogram of the corresponding cell (the area used for the histogram is surrounded with a black line) and (b) Example of the automated recognition of the different cell stages of PCC6803 using the ImageJ software. Cells that appeared red represented the wt pigmentation phenotype and cells that appeared orange represented the pigmentation phenotype of ethanol producing cultures. Cells in green were dead.