IL-12 protein forms IL-12 cytokine and IL-35 cytokine. It regulates T cell and natural killer cell responses, stimulates interferon gamma production, and promotes T helper 1 cell differentiation. IL-12 Protein, Rat (HEK293, His) is a recombinant protein dimer complex containing rat-derived IL-12 protein, expressed by HEK293 , with C-6*His labeled tag. IL-12 Protein, Rat (HEK293, His), has molecular weight of 25-35 & 40-50 kDa, respectively.