Fig. 4From: Differences in survival, virulence and biofilm formation between sialidase-deficient and W83 wild-type Porphyromonas gingivalis strains under stressful environmental conditionsConfocal microscopy images of the P. gingivalis W83 and ΔPG0352 biofilms (stained with live/dead bacterial viability kit) cultured under varying pH values (a), temperatures (b) and oxidative stress conditions (c). Bar: 50 μmBack to article page