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AHL analysis by tandem mass spectrometry: tandem mass spectra of the AHLs produced by NCI1051. (A) Parental ion at m/z 256; (C) m/z 284; (E) m/z 282; (B) synthetic C10-AHL; (D) synthetic C12-AHL. The fragmentation patterns of C10-AHL and C12-AHL are shown schematically below the graphs.
