There are 15 CD137 protein produced in house with high quality which are covering various species. Among these CD137 proteins, there are 6 Human CD137 protein, 4 Mouse CD137 protein, 2 Canine CD137 protein, 3 Rhesus CD137 protein. All these CD137 protein are expressed by different host cells. 15 CD137 proteins are expressed by HEK293 Cells . These CD137 proteins are produced with different tags, such as His Tag, His & hFc Tag, hFc Tag, rFc Tag, hFc & AVI Tag.