the o-specific polysaccharide obtained from shigella dysenteriae type-2 lipopolysaccharide by mild acid hydrolysis consisted of n-acetylgalactosamine , n-acetylglucosamine , d-galactose , d-glucose , and o-acetyl group in the ratio of 2:1:1:1:1 .
C0069180
o-specific polysaccharide
C0023810
lipopolysaccharide