详细信息:Platelet Derived Growth Factor (PDGF) is a potent mitogen for a wide range of cell types including fibroblasts, smooth muscle, and connective tissue. PDGF, which is a disulphide dimeric protein of two polypeptide chains termed the A chain and B chain, can be present as AA or BB homodimers or as an AB heterodimer. Human PDGF-AB is a 25.5 kDa heterodimeric protein consisting of one A chain and one B chain (234 amino acids).