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. 2012 Aug 20;109(37):E2451–E2456. doi: 10.1073/pnas.1205431109

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Fig. 3. — EM images of soybean seeds. (A and B) High nano-ZnO treatment. The seed coat (SC) and cotyledon tissue (marked with “C”) are visible. B is a magnification from a region of A (white rectangle). Regions of high electron density (triangle, B) were enriched with Zn according to EDS. Nano-sized accumulations within cells (arrows) were visible. (C) Control soybean: the bright electron-dense regions between cells are not apparent as in the high nano-ZnO treatment. Nano-sized accumulations are also not visible in the control.