Human IL-23A Mouse IL-12B Heterodimer Protein, His TagTag Free (ILB-HM52W6) is expressed from human 293 cells (HEK293). It contains AA Arg 20 - Pro 189 (IL23A) Met 23 - Ser 335 (IL12B) (Accession Q9NPF7-1 (IL23A) P43432-1 (IL12B)). 1 * 1 mg