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Flagella with the HBB complex are released into the culture supernatant of the flgT mutant. (i to iii) Transmission electron micrographs of flagella released into the culture supernatant by the flgT mutant. (iv) Transmission electron micrograph of the polar flagellum of an osmotically shocked WT cell. Arrows point to the base of the flagellum. Grids were prepared at an OD600 of ∼2.0. Bar, 100 nm.
