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. 2006 Aug 25;188(21):7600–7608. doi: 10.1128/JB.00671-06

FIG. 3.

FIG. 3.

Light micrographs of nodules formed by the Bradyrhizobium japonicum strains USDA110 and 5051. Nodules were inoculated with either USDA110 or strain 5051 and harvested 18 or 22 days after inoculation. For panels A and B, nodules were fixed and embedded in paraffin and the sections were stained with fast green and safranin. For panels C and D, nodules were embedded in resin and the sections were stained with toluidine blue. Panels A to D are micrographs of 18-day-old nodules formed by USDA110 (A and C) and 18-day-old nodules of strain 5051 (B and D). Panels E and F are micrographs of 22-day-old nodules formed by USDA110 (E) and strain 5051 (F). (A) Magnification, ×20. (B, E, and F) Magnification, ×15. (C) Magnification, ×640. (D) Magnification, ×320.