Fig. 6. Elemental mapping of hemosome development. Cytoplasm of digest cells was observed by energy-filtering transmission electron microscopy. Each row of panels shows a section from cells on different days ABM (4, 8 and 20 ABM, from top to bottom). (Left) A reference image obtained at 250 eV, which depicts a structure-sensitive contrast. Nitrogen (middle) and iron (right) distributions are shown. DV, digestive vesicles; LU, lumen. Scale bar, 5 µm.