||Budding yeast Saccharomyces cerevisiae
||van Eunen K et al., Measuring enzyme activities under standardized in vivo-like conditions for systems biology. FEBS J. 2010 Feb277(3):749-60. p.752 right column bottom paragraphPubMed ID20067525
|| Canelas AB, Ras C, ten Pierick A, van Dam JC, Heijnen JJ & Van Gulik WM (2008) Leakage-free rapid quenching technique for yeast metabolomics. Metabolomics 4, 226–239.  Hans MA, Heinzle E, Wittmann C. Free intracellular amino acid pools during autonomous oscillations in Saccharomyces cerevisiae. Biotechnol Bioeng. 2003 Apr 20 82(2):143-51.PubMed ID12584756
||P.752 right column bottom paragraph:"An additional reason for this choice is that the total amino acid concentration in the cell is ∼ 150 mm [primary sources], which compensates substantially, albeit not completely, for the lack of anions." Please note-ref states "total amino acid" whereas primary source  gives "free intracellular amino acid".