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A, B The percentage of NP147–155 tetramer+CD8+ splenocytes post-boosting immunization. (n = 3; ***p < 0.001; ns, p > 0.05) C. Enumeration of NP activated IFN-γ or IL-4 secreting splenocytes by ELISpot. (n = 3; * p<0.05; ns, p > 0.05)
