Recombinant human Fibroblast Growth Factor-acidic (aFGF) (140AA), also called as FGF-1, HBGF-1, ECGF-beta, is a non-glycosylated heparin binding growth factor that is expressed in the brain, kidney, retina, smooth muscle cells, bone matrix, osteoblasts, astrocytes and endothelial cells. FGF-acidic has the ability to signal through all the FGF receptors. Aurora Biolabs’ Recombinant human FGF-acidic is a 15.8 kDa protein consisting of 140 amino acid residues.