Figure 1.

The CWPS of GAS and synthetic oligosaccharides corresponding to portions (structures 1–9) of the CWPS. The CWPS chemical structure is: AB′A′B -α-l-Rhap-(1→2)-α-l-Rhap-(1→3)-α-l-Rhap-(1→2)-α-l-Rhap-(1→3) 33 ↑↑ 11 β-d-GlcpNAcβ-d-GlcpNAc C′C