There are 12 CD137 protein produced in house with high quality which are covering various species. Among these CD137 proteins, there are 5 Human CD137 protein, 3 Mouse CD137 protein, 2 Canine CD137 protein, 2 Rhesus CD137 protein. All these CD137 protein are expressed by different host cells. 12 CD137 proteins are expressed by HEK293 Cells . These CD137 proteins are produced with different tags, such as His Tag, His & Fc Tag, Fc Tag.