the degraded polysaccharide prepared from lps by mild acid hydrolysis was fractionated by sephadex g-50 gel chromatography into three fractions : ( 1 ) a high-molecular-mass fraction , eluting just behind the void volume , consisting of a long chain of rhamnose ( 22 mols per 3 mols of heptose residue ) with attached core oligosaccharide ;
C0032594
polysaccharide
C0028959
oligosaccharide