FGF19 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 195 amino acids and having a molecular mass of 21.8 kDa.The FGF-19 is purified by proprietary chromatographic techniques.Filtered (0.4 µm) and lyophilized from 1mg/ml in 1x PBS, pH 7.4.