Nuclear membranes are compartmentalized during late stages of nuclear division. (A–C) FLIP experiments on the indicated markers of the nuclear envelope during early and late anaphase. Graphs are as in Fig. 2. Mean fluorescence levels ± SD over time in the mother (red) and daughter part (green) are shown; bleaching area is indicated in blue. White lines indicate cell outlines. (D) °CP values for the indicated markers during early (blue) and late (orange) stages of nuclear division (n ≥ 13 also see Table S1; means ± SEM). Numbers indicate relative increase of °CP from early to late anaphase. Bars, 3 µm.