title: A reinvestigation of Shigella flexneri O-antigens by methylation analysis.
mesh_terms: D000085:Acetates / Q000032:analysis; D000535:Aluminum; D000942:Antigens, Bacterial / Q000032:analysis*; D002849:Chromatography, Gas; D000939:Epitopes / Q000032:analysis*; D005944:Glucosamine / Q000032:analysis; D008070:Lipopolysaccharides / Q000032:analysis*; D008094:Lithium; D013058:Mass Spectrometry; D008745:Methylation; D010084:Oxidation-Reduction; D012210:Rhamnose / Q000032:analysis; D012760:Shigella / Q000276:immunology*; D012763:Shigella flexneri / Q000276:immunology
chemical_list: D000085:Acetates; D000942:Antigens, Bacterial; D000939:Epitopes; D008070:Lipopolysaccharides; D008094:Lithium; D000535:Aluminum; D005944:Glucosamine; D012210:Rhamnose