Figure 3
Amount of alanine remaining after each experiment. Experiments 1–4 included control samples of alanine-coated sand leachate compared with samples exposed to Mars ambient conditions, at -15 °C, with a NaClO2 layer, or a sand layer with 5% NaClO2 exposed to UV. Experiments 5–8 included UV exposure, covering alanine-coated sand, and RH in various combinations. Experiments 1–4 included duplicate or triplicate runs and their findings were averaged. All experiments were exposed to conditions in the MSC for 24 h. Uncertainties and additional details are shown in Supplementary Fig. S6 and Table S2. Note *Control experiment with an alanine-coated sand lower layer substrate and in a 7 mbar martian atmosphere. **Without microfiber disk covering alanine-coated sand.
