Drosophila embryos expressing Histone-GFP were injected at one pole (left) during interphase of cycle 13 with Geminin protein and followed in real time. Shown is an embryo progressing from metaphase of cycle 13 through cycle 14. Note the extra syncytial division that occurs in the injected pole while nuclei toward the uninjected end of the embryo remain in interphase. This video corresponds to Fig. 4 A (video is a projection of five confocal sections 1.5 µm apart).
