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and the central vacuole (or the developing embryo in the endosperm mi-
cropylar domain). Cellularization starts at the micropylar domain, where the
embryo is located, with the formation of the mini-phragmoplasts (Fig. 10B).
The multiple cell plate assemblies that arise between endosperm nuclei pos-
sess a wide tubular network type of membrane architecture (Fig. 10C) that