... either in wild-type strains and in mutant strains harboring mutations in the genes encoding enzymes of the biosynthesis and/or the transfer of the O-specific polysaccharide [12,13]. The core region ... [40–42]. The structure of the inner core region of the LOS fromP. stutzeri OX1, as determined in this study, was found toagree closely with the general structure described above. Itincludes the ... Y.A.,Za¨hringer, U. & Pier, G. (2003) Elucidation of the structure of the lipopolysaccharide core and the linkage between the core and the O-antigen in Pseudomonas aeruginosa immunotype 5 using...