Figure 3.

Microplate evolution over time. Microplate image displays the cellular response to acid treated pyrite over the course of the experiment. Two identical microplates are shown. The layout of the microplates follows the experimental designed presented in Figure 1. The changes in color on the right side of the microplate is due to development of the assay and becomes darker as cell viability/cell numbers increase. The lack of color in the wells with the highest amount of pyrite indicates low cell viability.