Human IL-32 α is one of approximately 6 splice variants of a gene cloned from the human lung carcinoma stable transfectant, A549-Rβ. IL-32 α has been shown to induce IL-8, TNF-α, and MIP-2 production from human & mouse macrophage cell lines. It is up-regulated in activated T- & NK-cells, and IFN-γ-treated epithelial cells. Human recombinant IL-32 α produced in E. coli is a 131 amino acid non-glycosylated polypeptide with a molecular mass of 14.9 kDa. MW: 14.9 kDa. Purity ≥97%