Animal-component-free, ACF

Many new medium companies formed in the early 1990s. Today, more than a decade later, the medium development industry has matured. Currently, a variety of serum-free (SF) media are available commercially. Table 32.3 lists some SF media produced in the United States. Many of these media are also made in powder form to facilitate use in laige-scale production. As listed in Table 32.3, there are different types of SF media, which can be categorized into protein-free (PF), chemical-defined (CD), and animal-component-free (ACF) media. The relationships among these different types of media are illustrated in Figure 32.1. 

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