monensin at 30 microm did not prevent internalization of cell surface 35s-labeled proteoglycans but almost completely inhibited their intracellular degradation to free [ 35s ] sulfate ( ed50 approximately 1 microm ) , resulting in intracellular accumulation of both ds and hs proteoglycans .
C0033692
proteoglycans
C0062503
hs proteoglycans