analysis of the cellular glycosaminoglycan ( gag ) pattern , as measured by 14c-glucosamine incorporation into the various gag types ( hyaluronic acid , heparan sulfate , chondroitin sulfate , dermatan sulfate ) revealed a significant increase of cell-bound hyaluronic acid ( it appears to be predominantly located at the cell surface or pericellular , since it is removable to a large extent by trypsin treatment ) , while the distribution pattern of sulfated gags did not exhibit a significant change .
C0017973
gag
C0019143
heparan sulfate