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Flagellar biosynthesis phenotypes of C. jejuni wild-type (WT) and flhF mutant strains. Transmission electron microscopy of negatively stained bacteria was performed. All micrographs are between magnification ×11,500 and ×20,500. Bars = 1 μm. (A) DRH212 (WT 81-176 Smr); (B) DRH1056 (81-176 Smr ΔflhF); (C to F) MB630 [81-176 Smr flhF(D321A)]; (G to J) MB628 [81-176 Smr flhF(R324A)]. Arrowheads indicate truncated flagella produced by some bacteria in panels C, G, and J.
