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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Mol Microbiol. 2015 Oct 14;99(1):88–110. doi: 10.1111/mmi.13218

Figure 8. Swimming speed correlates with flagellum number.

Figure 8

(A) Individual bacteria were analyzed for the number of flagella from TEM images and are reported as percent of the total bacterial population examined (n=83–105). (B) Speed distributions for all bacteria analyzed (Speedall) and (C) distributions summarizing the standard deviation of each individual bacterium’s speed trajectory, σbac, acquired for wild-type B128 and its isogenic flagellar mutants, fliOΔC and sRNA_T, in viscous solutions of PGM (15 mg mL−1). Representative data is from one of two independent experiments for each strain. The mutant speed distributions are significantly different from wild-type B128, where K-S p <0.05 in each case (see Table 5). No significant difference in temporal speed variation was observed between wild-type B128 and sRNA_T (p=0.10); B128 vs. fliOΔC (p=0.98); or sRNA_T vs. fliOΔC (p=0.29).