the affinity of ec-sod c for various sulphated glycosaminoglycans ( gags ) was assessed ( a ) by determining the concentration of nacl required to release the enzyme from gag-substituted sepharose 4b and ( b ) by determining the relative potencies of the gags to release ec-sod c from heparan sulphate-sepharose 4b .
C0017973
glycosaminoglycans
C0019143
heparan sulphate