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EA-OTLC-MS analysis of intact LOS from C. jejuni MF6 prepared using a traditional method. A separation voltage of 20 kV, together with a pressure of 50 kPa, was employed. Samples (1.0 μl) were injected. (A) Total ion chromatogram (m/z values of 600 to 1,800) and extracted ion chromatogram (m/z of 1,096.2); (B) extracted mass spectrum at 4.5 min.
