Human Interleukin-6 (IL-6) plays a role in the mediation of the inflammatory and immune response initiated by infection or injury. IL-6 acts on B cells by stimulating differentiation and antibody secretion. IL-6 also exhibits growth factor activity for mature thymic or peripheral T cells, and enhances the differentiation of cytotoxic T cells in the presence of IL-2 or IFN. This glycoprotein is composed of 184 amino acid residues, and has a 42% homology with murine IL-6. >85% pure. Liquid frozen solution (PBS) at 0.5 mg/ml (50 microliter/vial).