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