Deadly nightshade leaf. Coloured scanning electron micrograph (SEM) of a section through a leaf from a deadly nightshade (Atropa belladonna) plant. At top is the leaf surface (green), below this are palisade mesophyll cells, spongy mesophyll cells and a vascular bundle (bue, lower right). Chloroplasts (bright green), starch grains and cell nuclei (red) are also seen. At centre is a cell nucleus with its nucleolus (red). The yellow structures are constituents of the vacuole. Magnification: x1030, when printed 10 centimetres wide.