Determining which growth factors are most important for cultured meat production depends on the final product, and whether the process can use animal-derived components. Cultured meat production can use animal-derived components such as fetal bovine serum, which inherently contains the complex mixture of growth factors needed. In serum-free processes the different growth factors have to be generated individually using recombinant protein production, and then added at different stages during the production. The individual factors include basic fibroblast growth factor (bFGF) for cell growth, and hepatocyte growth factor (HGF) for cell differentiation.
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