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Histograms of the best-fit values of the persistence length Lp for T4P of a P. aeruginosa PAO1 pilT mutant for (a) mica surfaces and (b) gold surfaces, using a bin size of 1.0 nm, and measured using a sharp pyramidal AFM tip. The insets in (a) and (b) are expanded views of the Lp distributions ranging from 0 to 6 nm using a smaller bin size of 0.1 nm. To see this figure in color, go online.
