this pdgf material had no apparent growth activity for mtw9/pl cells , although chromatography of this material on biogel p-100 revealed a high molecular weight ( approximately 40,000 daltons ) activity for the balb/c 3t3 cells ( presumably pdgf ) and two growth activities for the mtw9/pl cells , one high molecular weight activity and a second activity of molecular weight less than 10,000 .
C0007634
cells
C0007595
growth