Fig. 3

The kinetic changes of cycling and activated T cells during influenza infection were longitudinally characterized. Kinetics of cycling and activated T cells are shown as frequencies, A %Ki67⁺CD8⁺ T cells of total CD8⁺ T cells, B %Ki67⁺CD4⁺ T cells of total CD4⁺ T cells. C %CD38⁺HLA-DR⁺CD8⁺ T cells of total CD8⁺ T cells, D %CD38⁺HLA-DR⁺CD4⁺ T cells of total CD4⁺ T cells during the disease course. Statistical significance is determined by unpaired t test. *P < 0.05, **P < 0.01, ns, not significant