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Electron microscopy of E. coli CFT073 grown in the presence and absence of 1,2-PD. (A to C) E. coli CFT073 grown in the absence of 1,2-PD (A), the presence of 1,2-PD (B), and the presence of 1,2-PD (higher magnification (C)). (D) A grpP mutant (unable to express grp genes) grown in the presence of 1,2-PD. Arrowheads point to bacterial MCPs.
