HumanZyme has developed HumaXpress™ to produce active recombinant human proteins in a human HEK-derivative cell line in serum-free and chemically defined media. Using this technology, the company’s scientists have produced a large number of active and authentic human cytokine and kinase reagents, designed to meet the needs of researchers for preclinical and clinical work. Comparative studies indicate that these recombinant human proteins from human cells are superior to those produced in non-human cell systems.