There are 3 C2 protein produced in house with high quality which are covering various species. Among these C2 proteins, there are 2 Human C2 protein, 1 Mouse C2 protein. All these C2 protein are expressed by different host cells. 3 C2 proteins are expressed by HEK293 Cells . These C2 proteins are produced with different tags, such as His Tag, hFc Tag.