File Name : si_figure_linz.tif

Caption : figure si 1. electropherograms depicting the separation of an extracted serum sample spiked with ma standards for peak identification. the top trace (blue) was spiked with an additional 500 nm of pa, while the bottom trace (black) contained an additional 500 nm of mma. pa is present in both samples as it is added early in the analysis as part of the sample preparation procedure.