Activation and differentiation marker expression by CD8 T cells from patients with severe versus mild influenza.

<p>Panels a–f show the percentages of cells expressing the markers indicated on the vertical axis by time interval since onset. Each line represents an individual patient. Panel g shows the relationship between the percentages of CD8 T cells that are CD38+HLADR+ and CD27+CD28− and includes results for all time points. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0031535#s2" target="_blank">Results</a> are shown for 10 patients with severe influenza (red tones symbols and lines) and 39 patients with mild influenza (blue tone symbols and lines).