Tissue cyst visualized by EM. A. Myeloid cell (pink) intimately associated with a neuron (yellow), infected and stretched thin by a large cyst (red) containing hundreds of bradyzoites (orange). B. 3D reconstruction of infected neuron pictured in A. C. Synaptic vesicles in the presynaptic neuron (grey) is evidence the infected neuron (yellow) is still functioning. D. Large lysosomal bodies, characteristic of myeloid cells (pink), are present in close association to the infected neuron (yellow).