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However, a viable and less expensive substitute for the conventional media formulations has been described using a mixture of maltose syrup, maize steep liquor, and betaine (Xia, Chen, et al., 2015

However, the reality is more complex

Informational content only not medical advice

It's frustrating, and it's avoidable

Regulation of IL-5 Receptor on Eosinophil Progenitors in Allergic Inflammation: Role of Retinoic Acid
