There are 4 RSPO1 protein produced in house with high quality which are covering various species. Among these RSPO1 proteins, there are 3 Human RSPO1 protein, 1 Mouse RSPO1 protein. All these RSPO1 protein are expressed by different host cells. 2 RSPO1 proteins are expressed by HEK293 Cells , 2 RSPO1 proteins are expressed by CHO Stable Cells . These RSPO1 proteins are produced with different tags, such as His Tag.