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DR5 Is Expressed throughout the Infection Zone after Rhizobial Inoculation.
DR5:GUS expression in stable transgenic M. truncatula seedlings inoculated with S. meliloti. The blue color in (A) and (B) indicates staining of GUS activity. Arrows (A) indicate infection pockets containing microcolonies, and the arrowhead (B) indicates a root hair containing an infection thread. Bars = 50 μm.
(A) 3 dpi. The inset is a magnification of the boxed region.
(B) 5 dpi.
