There are 9 CD19 protein produced in house with high quality which are covering various species. Among these CD19 proteins, there are 4 Human CD19 protein, 2 Mouse CD19 protein, 3 Cynomolgus, Rhesus CD19 protein. All these CD19 protein are expressed by different host cells. 1 CD19 proteins are expressed by Baculovirus-Insect Cells , 8 CD19 proteins are expressed by HEK293 Cells . These CD19 proteins are produced with different tags, such as His Tag, hFc Tag.