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. 2008 Aug 20;3(8):e2975. doi: 10.1371/journal.pone.0002975

Figure 4. The percentage of circulating influenza-specific memory B cells before and after LAIV or TIV vaccination.

Figure 4

Percentages of influenza-specific memory IgG B-cells and IgA B-cells before (day 0) and 30 day (21–35 days in 2005 study, 27–47 days in 2004 study) after LAIV or TIV vaccination were measured. A: Comparisons of the percentages of influenza-specific memory IgA and IgG B-cells on day 0 and day 30 after LAIV ('05-LAIV) or TIV ('05-TIV) vaccination. B: Comparisons of memory IgG B-cell levels before vaccination in sub-groups based on the influenza vaccine received in the prior year: TIV ('03-T, '04-T), LAIV ('03-L), or no vaccination ('04-N). C: Comparisons of memory IgG B-cell levels one month after vaccination with '05-LAIV or '05-TIV between sub-groups '04-N and '04-T. The horizontal bars indicate the mean values. *, P<.05, **, P<.01, unpaired t-test.