Figure 2. PIP2 retains its colocalization with UBF during mitosis as demonstrated by SIM. Multi-immunolabeling followed by super-resolution structured illumination microscopy showed that PIP2 colocalizes with UBF in NORs, which are the mitotic counterparts of the interphase FCs, in prophase and metaphase. This colocalization pattern persists in anaphase and telophase in “daughter” NORs. Scale bar: 5 μm.