cultured monolayers of nmumg mouse mammary epithelial cells have augmented amounts of cell surface chondroitin sulfate glycosaminoglycan ( gag ) when cultured in transforming growth factor-beta ( tgf-beta ) , presumably because of increased synthesis on their cell surface proteoglycan ( named syndecan ) , previously shown to contain chondroitin sulfate and heparan sulfate gag .
C0019143
heparan sulfate
C0017973
gag