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Figure 4: Effect of 𝛽 -glu6 on the CD8+/IFN- 𝛾 + T cells induced by pB144 in the spleen. Mice were immunized by pB144 with 𝛽 -glu6, and boosted at day 30 after priming. At day 5 (left) and 14 (middle) after priming, and day 10 after boosting (right), splenocytes were isolated and cultured for 5 hours in the absence or in the presence of a specific peptide corresponding to K b -restricted CTL epitope of HBcAg. Cells were then double-stained with PerCP-anti-CD8a and APC-anti-IFN- 𝛾 antibodies and analyzed cytofluorimetrically. Data expressed as mean ± SD of 3 mice/group. * 𝑃 < . 0 5 , pB144+G versus pB144 alone.