after enzyme hydrolysis , dermatan sulfate ( 62 % of the total glycosaminoglycans ) and chondroitin 4/6-sulfate ( 30 % ) were found to be the major glycosaminoglycans synthesized by cultured synovial cells , and the existence of 8 % heparan sulfate was evidenced by nitrous acid treatment .
C0017973
glycosaminoglycans
C0019143
heparan sulfate