There are 14 CD137 protein produced in house with high quality which are covering various species. Among these CD137 proteins, there are 6 Human CD137 protein, 3 Mouse CD137 protein, 2 Canine CD137 protein, 3 Rhesus CD137 protein. All these CD137 protein are expressed by different host cells. 13 CD137 proteins are expressed by HEK293 Cells , 1 CD137 proteins are expressed by Human Cells . These CD137 proteins are produced with different tags, such as His Tag, His & Fc Tag, Fc Tag.