after incubation of fibroblasts with [ 3h ] glucosamine and 35so4 in the presence or absence of pdgf , labeled constituents were isolated from the extracellular , pericellular , and cellular fractions by pronase digestion and column chromatography on sepharose cl4b or deae-cellulose and analyzed by cellulose acetate electrophoresis .
C0016030
fibroblasts
C0007634
cellular