The Modulation of Adaptive Immune Responses by Bacterial Zwitterionic Polysaccharides

Figure 1

Structure of ZPSs. (a) Repeating sugar molecules of Bacteroides fragilis PS A1 carrying zwitterionic charge motives. (b) ZPS Sp1 of S. pneumoniae serotype 1.

(a) ZPS “PS A1” of B. fragilis

(b) ZPS “Sp1” of S. pneumoniae  type 1