PHOSPHOGLYCOLIPID PROFILING OF BACTERIAL ENDOTOXINS 11 [5] Sándor, V.; Kilár, A.; Kilár, F.; Kocsis, B.; Dörnyei, Á.: Characterization of complex, heterogeneous lipid A samples using HPLC–MS/MS technique III. Positive-ion mode tandem mass spectrometry to re- veal phosphorylation and acylation patterns of lipid A. J. Mass Spectrom. 2018, 53(2), 146–161. DOI: 10.1002/jms.4046 [6] Madalinski, G.; Fournier, F.; Wind, F.L.; Afonso, C.; Tabet, J.C.: Gram-negative bacterial lipid A analysis by negative electrospray ion trap mass spectrometry: stepwise dissociations of deprotonated species under low energy CID conditions. Int. J. Mass Spectrom. 2006, 249–250, 77–92. DOI: 10.1016/j.ijms.2005.12.049 46(1) pp. 7-11 (2018) Introduction Experimental Chemicals and Reagents Bacterial strains and lipid A isolation Liquid Chromatography – Mass Spectrometry Measurements Results and Analysis HPLC-MS of bacterial lipid A Tandem mass spectrometric analysis of lipid A species Discussion Conclusion