ClonaCell™-CHO CD Liquid Medium is a general purpose liquid medium for culture of suspension-adapted CHO cells. This chemically defined liquid medium is protein-free and animal component-free. It does not contain L-glutamine, selection agents, antibiotics, or phenol red. ClonaCell™-CHO CD Liquid Medium is compatible with a variety of selection systems, including dihydrofolate reductase (DHFR) and glutamine synthetase (GS).