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Cross-sections of cotyledons from transgenic plants expressing DXR-GFP (H line) and untransformed wild type controls (C) were used for immunogold labelling with anti-DXR serum and observed at the transmission electron microscopy (TEM) level. Numbers indicate phases of DXR-GFP vesicle development in the transgenic lines (the unnumbered panel shows an isolated vesicle). ar, 0.5 μm.
