... of note that the structure of the LPS O -antigen of F. columnare differs structurally from the LPS O -antigen of the fish pathogen Flavobacterium psychrophilium [21],which is a linear polymer of ... Structural characterization of the lipopolysaccharide O-polysaccharide antigen produced by Flavobacterium columnare ATCC 43622 Leann L. MacLean1, Malcolm ... was shown by 1D and 2D NMRanalysis, MS, and chemical methods that the O-PS of the LPS produced by F. columnare ATCC 43622 is a linearunbranched polymer of trisaccharide units composed of D-GlcNAcA,...