Table 1. Properties of fluorescent dyes.

Fluorochrome	Cell function	Reaction	Detection*
DAPI	Presence/ shape of nucleoids	Stains dsDNA in both living and dead cells	Blue-white (blue) fluorescence of nucleoids
SYTOX Green	Membrane integrity	Stains cells with damaged membranes	Green fluorescence of nucleoids
CTC	Respiratory rate	Accumulation of formazan crystals in active cells	Red-orange fluorescence of CTC-formazan
INT	Respiratory rate	Accumulation of formazan crystals in active cells	Purple deposits under transmitted light

^*The colors of the dyes' fluorescence were given by the filter sets that were utilized in our microscopy observations.