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Mass isotopomer distributions of four different amino acids arising from ethanol metabolism. (A) Aspartate, (B) Alanine, (C) Serine, (D) Valine. The relative abundance of heavier isotopomers of amino acids is much higher in comparison to that of control, indicating the uptake of a labelled carbon source. Note that we considered (M-57)+ fragment for our analysis. The three bars indicate the results from the experiment, the control and the standard, as indicated in the legend.
