CET's Serum-Free CHO Medium is chemically-defined,serum-free, protein-free and animal origin-free and is specificallydesigned for high density growth for both adherent and suspension Chinese Hamster Ovary (CHO) cell cultures. This medium is transfection-compatible with a number of transfection reagents and maintains high viability at high cell densities. The media, along with CET's CHO cells have been optimized not only for cell growth but also small and large scale protein production.