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EA-OTLC-MS and EA-OTLC-MS/MS of intact LOS. All experimental conditions were the same as those for Fig. 3. (A) Strain GB13; (B) strain GB11; (C) strain MF8; (D) strain GB4; (E) product ion spectrum with an m/z of 1,134.8 ([M-4H]4−); (F) product ion spectrum with an m/z of 1,086.1 ([M-4H]4−); (G) product ion spectrum with an m/z of 1,035.4 ([M-4H]4−); (H) product ion spectrum with an m/z of 1,081.4 ([M-4H]4−).
