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Auxin metabolite concentrations in crown galls. (A) Crown galls formed on the stem of tomato plants (indicated by white arrows). (B) Auxin metabolite concentrations in the stem of noninoculated tomato plants (stem) and crown galls (CG). Values are mean � SD (n = 3). *Differences between the stems and crown galls are statistically significant at P < 0.05 (Student’s t-test).
