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Visualization of lipopolysaccharide (LPS) in midribs of Arabidopsis thaliana leaves with sodium dodecylsulphate‐polyacrylamide gel electrophoresis. Gels were stained with an LPS‐specific stain (a), a protein‐specific stain (b) or a nonspecific stain (c). Lanes: 1, LPS standard (100 µg/mL); 2, LPS standard (10 µg/mL); 3, untreated control; 4, whole treated leaf directly after LPS inoculation; 5, midrib after 1 h; 6, midrib after 6 h; 7, midrib after 24 h.
