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The pH of the culture medium is an important parameter that affects the growth and productivity of cells in a bioreactor. The pH can affect the solubility, stability and activity of enzymes, as well as the uptake and metabolism of nutrients. In the case of rituximab production, the pH can affect the stability and activity of the protein, as well as the productivity of the cells. Optimal pH for rituximab production in Chinese hamster ovary (CHO) cells usually ranges from 7.0 to 7.5. A pH that is too low or too high can cause the protein to denature or aggregate, reducing its activity and stability. Additionally, a pH that is too low or too high can also cause stress to the cells, reducing their productivity. A research article "Development of a high-titer, high-density fed-batch process for the production of Rituximab in Chinese Hamster Ovary (CHO) cells" by Wang et al. (2015) aimed to improve the production of rituximab by developing a high-titer and high-density fed-batc...
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