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Cytotoxic T lymphocyte responses in mice immunized with the recombinant Mycobacterium bovis BCG (rBCG) strains. CTL responses due to the reaction of in vitro stimulated splenocytes with p24 (effector cells) and p24 epitope peptide (A9I) pulsed P815 cells (target cells). Three mice per group were analyzed. Data are representative of two independent experiments. Mean ± SD are shown. *P < 0.05 (Student’s t-test).
