Figure 6. Antigen-specific T cell response to the 2009 H1N1 vaccine.
(A) Antibody response to A/California/7/2009 (H1N1) virus by HAI titer at various time points before and after influenza vaccination. (B) Contour plot showing expansion of HA(H1N1)-specific T cells of donor 1 nine days after vaccination. (C) The kinetics of HA(H1N1)-specific T cells. Error bars represent SEM. Experiments from each donor at each time point were performed 1–4 times, depending on sample availability. (D) The percentage of HA(H1N1)-specific T cells that are CD45RO+.