TheExpiCHO expression systemalso includes ExpiCHO Feed and ExpiFectamine CHO Enhancer to achieve maximal protein yields. Both reagents need to be added to the ExpiCHO-S cells within 18 to 22 hours after transfection.

• ExpiCHO饲料is an optimized, chemically-defined, serum-free, protein-free, animal origin-free formulation designed to work in conjunction with ExpiCHO expression medium to support long-term, high-density transient transfections.

• ExpiFectamine CHO Enhanceris an animal origin-free formulation developed to be used in conjunction with ExpiFectamine CHO reagent and ExpiCHO Feed to enhance protein production, resulting in maximal protein yields.