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1H-NMR spectrum of C. jejuni 81-176 galT core OS. The spectrum shows two α-anomeric resonances of ld-Hep units (A and B) and two β-anomeric resonances of Glc units (C and D); the deoxy signals of the Kdo unit and the methylene resonances of the PEA moiety are also evident. The inset shows the anomeric region of the 1H-NMR spectrum obtained at 35°C to reveal anomeric resonance C, which coresonates with the HOD peak at 21°C. No GalNAc N-acetyl resonances were detected.
