the o-specific polysaccharide moiety ( 04 polysaccharide ) of the 04 antigen ( lipopolysaccharide ) from escherichia coli 04 : k12 : h- was isolated in pure form by degradation of the lipopolysaccharide and chromatography on sephadex g-50 .
C0069180
o-specific polysaccharide
C0023810
lipopolysaccharide