Description: Cytokine that can act as a growth factor for activated T and NK cells, enhance the lytic activity of NK/lymphokine-activated Killer cells, and stimulate the production of IFN-gamma by resting PBMC. (www.uniprot.org) Produced in E.coli as a single, non-glycosylated, polypeptide chain containing 197 amino acids (fragment 57-253) with an amino-terminal hexahistidine tag.