Strains of Escherichia coli belonging to serogroups O157 and O55 express lipopolysaccharides that are structurally distinct and do not share common epitopes.

ganglioside antibodies with lipopolysaccharide fractions of Campylobacter jejuni isolates from patients with Guillain-Barré syndrome (GBS). J Neuroimmunol 1997;73:28–36. 7. Jacobs BC, Endtz HP, van der Meché FGA, Hazenberg MP, de Klerk MA, van Doorn PA. Humoral immune response against Campylobacter jejuni lipopolysaccharides in Guillain-Barré and Miller Fisher syndrome. J Neuroimmunol 1997;79:62–8. 8. Ogino M, Orazio N [sic], Latov N. IgG anti-GM1 antibodies from patients with acute motor neuropathy are predominantly of the IgG1 and IgG3 subclasses. J Neuroimmunol 1995;58:77–80. 9. Heidenreich F, Leifeld L, Jovin T. T cell–dependent activity of ganglioside GM1–specific B cells in Guillain-Barré syndrome and multifocal motor neuropathy in vitro. J Neuroimmunol 1994;49:97–108. Reprints or correspondence: Dr. Nobuhiro Yuki, Dept. of Neurology, Dokkyo University School of Medicine, Kitakobayashi 880, Mibu, Shimotsuga, Tochigi 321-0293, Japan ([email protected]).