Figure 5.

Flagellation of representative nonchemotactic mutants. Cells grown on swarm media were stained to visualize flagella as described (7). (a) Nonswarming E. coli HCB429 (Fig. 1A, b). (b) Swarming E. coli HCB429/pJC3-Tsr(R64C) (Fig. 3B). (c) Nonswarming E. coli RP2867 (cheBR) (Table 3). (d) Swarming S. typhimurium MY107 (fliG) (Table 3). The morphology of wild-type E. coli (not shown) is indistinguishable from that of the Tsr mutant shown in b. (Bar = 2.8 μm.)