all the polymers contained repeating disaccharide units , d-glucuronosyl-n-acetylgalactosamine , d-glucuronosyl-n-acetylgalactosamine 4-sulfate , d-glucuronosyl-n-acetyl-galactosamine 6-sulfate , and l-iduronosyl-n-acetylgalactosamine 4-sulfate , of which d-glucuronosyl-n-acetylgalactosamine 6-sulfate and l-iduronosyl-n-acetylgalactosamine 4-sulfate were predominant .
C0016943
galactosamine
C0001055
acetylgalactosamine