Relative abundance of bulk hydrocarbons in the oil chamber at the beginning and end of the MIMOSA experiment. (A) Normalized gas chromatography profiles, with data from the end of the experiment (blue) plotted on an inverse scale, to highlight similar patterns to beginning data (red). (B) Hopane-normalized concentrations of n-alkanes (white triangles), phenanthrenes (blue squares), fluorenes (red diamonds), and naphthalenes (yellow circles) from the beginning and end of the experiment. DOI: https://doi.org/10.1525/elementa.129.f7