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Schematic of prompt fragmentation processes observed for O-deacylated LOS by negative-ion MALDI-MS. All masses shown are average masses based on those calculated for both the wild-type and galE mutant LOSs. Hex, hexose; HexNAc, N-acetylhexosamine; Kdo, 2-deoxy-3-keto-octulosonic acid. See the legend for Fig. 4 and text for further discussion.
