Do you fixate the cells for the microscopy? (I mean i guess so, if you use antibodys for staining but better to ask)
If so, you could try finding an antibody against components of the DREAM complex. It is bound to many promoters in G0 and gets released during G2 and replaced ba different proliferation complexes later on.
I am not working in the lab currently, I am writing a review about measuring T cell proliferation using BrdU assay with fluorescence microscope .My question is how I can analyze the results of fluorescence microscope images ?