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. 2018 Feb 8;69(8):2117–2130. doi: 10.1093/jxb/ery046

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© The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3. — TEM images of wild type (WT) (A, D) and na-1 mutant (B–F) infection and nodule development 5 weeks following inoculation with lacZ-labelled Rhizobium leguminosarum bv. viciae. (A, B) Central zone of the nodule; the arrow indicates an infection thread. (D, E) Close-up of bacteria inside the central zone. (C) Bacterial accumulation in na-1 mutant root and (F) close-up of bacterial accumulation, showing bacteria, extracellular matrix (em), plant cell wall (cw), and plasma membrane (pm). For (A–C) scale bar=60 μm, for (D–F) scale bar=20 μm.