Recombinant Human IL-12/IL-12A&IL-12B Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (IL12B(Ile23-Ser328)-3(GGGGS)IL12A(Arg23-Ser219)) of Human IL-12/IL-12A&IL-12B (Accession ) fused with a His tag at the C-terminus.