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Scanning electron microscopy images of wild-type and transgenic calli. (a) Callus of wild-type MR219. (b) Callus of transgenic MR219. (c) Callus of wild-type MR220. (d) Callus of transgenic MR220. (e) Callus of wild-type MR276. (f) Callus of transgenic MR276. White trace marked by red arrows: silicon. Bars = 100 μm.
