label: [4)-alpha-L-Rhap-(1->3)-alpha-D-Galp-(1->2)-alpha-D-Manp-(1->]n
label_lc: [4)-alpha-l-rhap-(1->3)-alpha-d-galp-(1->2)-alpha-d-manp-(1->]n
description: "A polysaccharide composed of a backbone of linear trisaccharide repeating units consisting of alpha-L-rhamnose, alpha-D-galactose and alpha-D-mannose residues linked sequentially (1->3) and (1->2), the repeating units being joined to each other via alpha(1->2)-linkages; corresponds to the backbone of the O-antigen repeat unit of the O:12 antigen common to Salmonella serogroups A, B and D."