in serum-deprived osteoblast-enriched ( ob ) cultures from fetal rat bone , recombinant human pdgf ( composed of a b chain homodimer ) at 0.1-3 nm enhanced the rate of dna synthesis by 2- to 8-fold within 24 h of treatment , and 0.3-3 nm pdgf increased cell number by 1.3- to 1.6-fold .
C0379135
recombinant human pdgf
C0032200
pdgf