after incubating cultured chondrocytes from the swarm rat chondrosarcoma for 30 min with [ 3h ] serine , a labeled macromolecule was found predominantly as mr = approximately 370,000 species which was subsequently identified as a core protein precursor to cartilage proteoglycan from the following properties : ( a ) it was immunoprecipitated along with completed proteoglycan from cell extracts by an antiserum to the complex of hyaluronic acid-binding region , link protein , and hyaluronic acid .
C0225369
chondrocytes
C0007301
cartilage