CD8A and viral infectious disease: Imaging was performed on days 10 to 12 following virus infection, and control mice showed a response similar to what is normally observed in this model at this time point: a high activity and large infiltration of CD8+ T cells as well as a large infiltration of CX3CR1+ macrophages and dendritic cells (Fig. 2, B, E, and F, and movie S1) (19).