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(A) Disc diffusion assays (representative images; n>3) illustrating effects of overexpression of cdaA, cdaA-cdaR (cdaAR), glmM-glmS, cdaAR-glmM or cdaAR-glmM-glmS on the CEF sensitivity of the ΔglmR strain. Numbers represents diameter of ZOI (mm). Note that for cdaAR-glmM there is a small clear inner zone (13 mm), and a larger zone of greatly reduced growth (30 mm). (B) Growth curves in MH media for the strains shown in panel (A).
