There are 2 FGF21 protein produced in house with high quality which are covering various species. Among these FGF21 proteins, there are 1 Human FGF21 protein, 1 Mouse FGF21 protein. All these FGF21 protein are expressed by different host cells. 1 FGF21 proteins are expressed by E. coli , 1 FGF21 proteins are expressed by HEK293 Cells . These FGF21 proteins are produced with different tags, such as His Tag.