Agglutination assay of GM1-Glc-immobilized fluorescent nanoparticles (GM1-Glc-SFNPs) with different sugar-chain densities and sera from GBS patients.

<p>(A–C) Images from an agglutination assay using GM1-Glc-SFNPs and serum from a GBS patient after incubation for (A) 1 h, (B) 3 h, or (C) 12 h. (D–F) Images from an agglutination assay using GM1-Glc/TEG (5:5)-SFNPs and serum from a GBS patient after incubation for (D) 1 h, (E) 3 h, or (F) 12 h. (G) Image from an agglutination assay of GM1-Glc/TEG (5:5)-SFNPs, GM1-SFNPs, or GM1-Glc/TEG-SFNPs using serial dilutions of serum, after incubation for 3 h.