Figure 1From: Comparison of the virulence of exopolysaccharide-producing Prevotella intermedia to exopolysaccharide non-producing periodontopathic organisms Viscosity of the spent culture media obtained from Prevotella intermedia strains 17, OD1-16 and ATCC 25611 and Porphyromonas gingivalis strains ATCC 33277, 381 and W83. Viscosity of the enriched trypticase soy broth was measured as a control. Bars indicate standard deviations. *P < 0.05.Back to article page