FIG. 4.

Growth of E. coli GC4468 exposed to NaSal. OD₆₀₀ as a function of time for strain GC4468 was determined. The cultures were either left untreated (empty circles) or treated with 5 mM NaSal (filled circles). NaSal was added to log-phase cultures (empty arrow), and cells were harvested after 45 min (filled arrow). For detailed culture conditions, see Materials and Methods.