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Dynamics of SR1/atSRp34-YFP during mitosis in living root epidermal cells. (A) A cell (arrow) just before nuclear envelope breakdown. (B and C) In prophase, as the nuclear envelope breaks down, the splicing factors enter the cytoplasm. (D) In metaphase, splicing factors are diffusely distributed in the cytoplasm. (E–J) Splicing factors are reentering into daughter nuclei. Newly forming speckles are observed in telophase nuclei (arrows in F–I). Bar, 5 μm.
