FIG. 2.

Saccharide-mediated lectin site inhibition and the effect of type III GBS CPS-specific IgG upon inhibition. Shown on the left is a comparison of the mean (± SEM) inhibition of opsonophagocytosis of type III GBS strain COH1 by nonimmune serum mediated by NADG (solid bars), β-methylglucoside (stippled bars), or β-methylmannoside (open bars). The bars on the right show significant reversal of inhibition, indicated by asterisks, when type III GBS CPS-specific IgG (15 μg/ml) was added (P < 0.04 for each sugar).