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Cellular morphology of the class 5 and class 2 triple-mutant strain. Fluorescence microscopy of stationary-phase M. smegmatis strains expressing gfp from plasmid pMN437. (a) PM3070 (WT), (b) PM3071 (ΔldtC) and (c) PM3072 (ΔldtB, ΔldtF, ΔldtC).
