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Characterization of SltF1 mutant. (A) Swimming assay in 0.25% soft agar. Spots: 1, wild-type strain WS8-N; 2, mutant SltF1 strain (sltFΔ1::aadA); 3, SltF1 strain complemented with the wild-type RSP0072 gene. (B) Electron micrographs of cells from the strains shown in the swimming assay (same order as in panel A). Bar, 500 nm.
