English: CD8+ T cell behavior during ECM. Intravital microscopy of a PbA infected CBA/CaJ mouse with ECM showing a large number of CD8+ T cells (green surface label) crawling along the endothelium of a cortical postcapillary venules with a typical leading edge and trailing uropod (arrow). CD8+ T cells were surface-labeled by intravenous inoculation of PE-conjugated anti-CD8a. The vascular lumen was visualized with Evans blue (red). Scale bar = 20 µm.