Interleukin 12 p70 heterodimer (IL-12p70) is a member of the IL-12 family of cytokines involved in the regulation of T cell responses. IL-12p70 is composed of a p35 and p40 subunits and create the bioactive Il-12p70 when combined. IL-12p70 has been shown to induce IFN production and the induction of NK cells.