CD79A and periodontitis: An efficient synthesis of thetetrasaccharide repeating unit of the LPS of requires stereocontrol as two of the four units are connected via1,2-cis-glycosidic linkages., The stereoselective AGA of LPS fragments is the basis for identifyinga potential vaccine candidate by screening the saliva and serum ofperiodontitis patients, treated periodontitis patients, and healthycontrols for IgG and IgA antibodies that bind LPS fragments.