double immunofluorescence experiments and metabolic labeling with [ 3h ] glucosamine performed in different types of cerebellar and cortical cultures showed that bipotential progenitors for type-2 astrocytes and for oligodendrocytes ( recognized by the monoclonal antibody lb1 at early stages of their development ) synthesize chondroitin sulfate ( cs ) and deposit this proteoglycan in their extracellular matrix .
C0033692
proteoglycan
C0015350
extracellular matrix