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. 2003 Mar;71(3):1170–1178. doi: 10.1128/IAI.71.3.1170-1178.2003

FIG. 6.

FIG. 6.

Sensitivity of P. gingivalis mutants to air (A) and air with hydrogen peroxide (B). P. gingivalis cells that had been anaerobically cultured in enriched BHI medium overnight were diluted twice with fresh enriched BHI medium (A) or enriched BHI medium containing hydrogen peroxide (final concentration, 0.5 mM) (B) and then incubated aerobically with vigorous shaking. Samples were withdrawn at intervals and plated, after dilution in enriched BHI medium, on enriched TS plates. The plates were incubated anaerobically at 37°C for 7 days. Symbols: ○, ATCC 33277 (wild type); ▵, KDP139 (ftn); •, KDP141 (dps); ▴, KDP142 (ftn dps).