Similar to the CD8+ T cells from Py-RAS or Pyfabb/f(−) immunized mice, the CD8+ T cells from the Py-CS280–288 immunized mice exhibited a low average velocity (1.06±0.26 μm/min) and a high arrest coefficient (89%) at 18 h post infection compared to CD8+ T cells in immunized donor mice before transfer (Fig.7A and 7B ). Here, CD8A is linked to infection.