When comparing TEM micrographs, we observed ultrastructural
differences between exposed cells (Fig. 3A–C, E) and the
control (Fig. 3D, F). Cells treated with the highest concentration of
organic matter showed a marked change in their apical view due
to an increase in size of the paramylon grains (Fig. 3A, B). The
lateral view also changed from very flat to globose (Fig. 3C).