FGF-18 Mouse Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 180 amino acids and having a molecular mass of 21kDa.The FGF-18 is purified by proprietary chromatographic techniques.FGF-18 protein was lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.