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Charge-deconvoluted ESI FT-ICR mass spectra (negative ion mode) of the water- and phenol-soluble LPS fractions from A. veronii Bs19 with unspecific fragmentation in the collision cell (collision voltage 30 V) (A) and (B), respectively, providing the fragmentation of the labile linkage between the Kdo and lipid A. Mass numbers given refer to the monoisotopic masses of the neutral molecules.
