more than 90 % of the labeled material released upon incubation of esb cells with the ecm , either when exposed or covered with vascular endothelial cells , was in the form of low-mr , heparan sulfate-containing fragments ( mr approximately 10 ( 4 ) ) compared to high-mr sulfated proteoglycans ( mostly excluded from sepharose 6b ) released by incubation with the low-metastatic eb cells .
C0015350
ecm
C0033692
proteoglycans