Mouse basic fibroblast growth factor (bFGF or Heparin-binding growth factor 2) is a singlechain polypeptide growth factor. bFGF is expressed in almost all tissues and play important roles in a variety of normal and pathological processes, including development, wound healing and neoplastic transformation. bFGF is mitogenic for many cell types, both epithelial and mesenchymal. Several different forms of the protein exist, ranging from 18-24 kDa in size due to the use of alternative start sites within the FGF-2 gene. The growth factor is an extremely potent inducer of DNA synthesis in a variety of cell types from mesoderm and neuroectoderm lineages. It was originally named basic fibroblast growth factor based upon its chemical properties and to distinguish it from acidic fibroblast growth factor. Recombinant Mouse basic FGF (FGF-2) produced in E. coli is a non-glycosylated single polypeptide chain containing 145 amino acids with a MW of 16,320 Da. It is purified by proprietary chromatographic techniques.