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Fig. 2. Representative images of Arabidopsis thaliana EL702C seedling, guard cells, pavement cells and nuclei observed in this study. (a) A live seedling used to observe chromatin movements. Bar, 1 mm. (b) Microscopically observed stomatal guard cells on a cotyledon. Two guard cells symmetrically located. Bar, 50 µm. (c) Microscopically observed pavement cells on a hypocotyl. Elongated rectangular cells fill the surface of the hypocotyl. Bar, 50 µm. (d) Guard-cell nuclei accumulating GFP-LacI/NLS in two guard cells. Three spots can be seen in the left nucleus and two spots in the right nucleus. Bar, 10 µm. (e) A pavement-cell nucleus accumulating GFP-LacI/NLS. Six spots can be seen in this nucleus. The nucleus elongates to opposite sides, parallel to the long axis of the hypocotyl. Bar, 10 µm.