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