analyses showed that both fractions were mainly composed of glucosamine-containing , hyaluronidase-resistant polysaccharides , which were identified by their n-sulphate : d-glucosamine and total sulphate : d-glucosamine ratios as heparan-sulphate in the less acidic fraction , and as heparin in the more acidic fraction .
C0017718
glucosamine
C0017720
glucosamine