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What supplements can be added to RPMI 1640 medium?
Publication date：2026-10-29
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We typically supplement RPMI 1640 medium with various additives, such as growth factors, proteins, 10% fetal bovine serum, phenol red, and antibiotics, adjusting these components appropriately based on the cell type being cultured. For example, to more readily monitor the pH of RPMI 1640, we can add phenol red. Phenol red changes color in response to pH variations, enabling researchers to promptly adjust the medium’s pH—this is one reason why RPMI 1640 may appear to change color. To prevent microbial contamination, we can incorporate an appropriate concentration of antibiotic–antimycotic solution. And when a rich supply of growth factors and nutrients is required, simply adding 10% fetal bovine serum ensures that the medium maintains adequate nutritional support. The specific supplements added to RPMI 1640 are determined by our experimental design and objectives.
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