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The ΔflgJBb mutant has defective PFs
| Strain | No. of cells | Total visible PFs | Total defective PFsa | Defective PFs/cell |
|---|---|---|---|---|
| B31A | 18 | 167 | 0 | 0 |
| ΔflgJBb | 31 | 255 | 74b | 2.4 ± 1.4 |
| ΔflgJBbcom | 22 | 215 | 0 | 0 |
Includes the PFs lacking filaments, PFs with truncated filaments, PFs with short flagellar hooks, and disoriented PFs (PFs directed to the cell poles instead of toward the middle of the cell bodies).
The defective PFs are evident in all 31 examined mutant cells.
