... Biological Sciences, National Research Council of Canada, Ottawa, Ontario, Canada The Gram-negative, spiral-shaped bacterium Campylo-bacter jejuni is one of the leading causative agents ofhuman ... revealed two separate reso-nances for Gal H-2, H-3 and H4 labeled A2 a ,A2 b, A3 a ,A3 b ,A4 a and A4 b, respectively. (Fig. 4A) . The 1D-NOESY of Gal H- 4a showed NOEs for Gal H- 2a, Gal H- 3a, Gal H-5 and ... fructose branch atGal C-2 was present and; another at 5.20 p.p.m. whenit was absent. These structural artifacts complicatedNMR and mass spectrometry data and as a result,hindered the identification...