FIG. 1.

Blocking of the binding of human anti-LPS MAb S20 to solid-phase P. aeruginosa strain 06ad LPS O-side-chain PS by preincubation with 06ad PS (▪) but not control PS from Streptococcus pneumoniae serotype 6B (♦) in an ELISA. The x axis shows micrograms of 06ad PS or control PS per milliliter added to each reaction tube. The y axis depicts the percent reduction of absorbance obtained with the PS inhibitor. Data represent means from three separate assays, each run in duplicate, and standard errors of the means.