There are 2 Bcl-XL protein produced in house with high quality which are covering various species. Among these Bcl-XL proteins, there are 1 Human Bcl-XL protein, 1 Mouse Bcl-XL protein. All these Bcl-XL protein are expressed by different host cells. 2 Bcl-XL proteins are expressed by E. coli . These Bcl-XL proteins are produced with different tags, such as His Tag.