There are 12 B7-1 protein produced in house with high quality which are covering various species. Among these B7-1 proteins, there are 5 Human B7-1 protein, 3 Mouse B7-1 protein, 3 Cynomolgus B7-1 protein, 1 Rat B7-1 protein. All these B7-1 protein are expressed by different host cells. 12 B7-1 proteins are expressed by HEK293 Cells . These B7-1 proteins are produced with different tags, such as His Tag, hFc Tag, His & hFc Tag.