Fig. 2From: Differences in survival, virulence and biofilm formation between sialidase-deficient and W83 wild-type Porphyromonas gingivalis strains under stressful environmental conditionsTEM images of P. gingivalis the W83 and ΔPG0352 strains cultured under varying pH values (a), temperatures (b) and oxidative stress conditions (c). Magnification: 70,000×; bar: 500 nm. (d) Survival rates of both strains cultured under oxidative stress; †versus the P. gingivalis W83 strain grown under normal culture conditions, P < 0.05; ‡ versus the ΔPG0352 mutant grown under normal culture conditions, P < 0.05; # versus the P. gingivalis W83 strain under the same culture conditions, P < 0.05Back to article page