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Description
As reviewed by Sottero et al

In standard in vitro tissue culture media, free amino acids are present in artificially high concentrations with added fetal bovine serum (FBS) providing only 510% of the free extracellular protein found in in vivo serum concentrations [117]

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(2012) Contents of lovastatin, -aminobutyric acid and ergothioneine in mushroom fruiting bodies and mycelia
