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Mean levels of IFN-γ ± SEM released from bovine PPD-stimulated cultures of whole blood from animals vaccinated with BCG alone (▪), BCG-CFP-DDA-PIM (▴), BCG-CFP-DDA-MPL (•), BCG-CFP-DDA-Pam3CSK4 (*), or BCG-DDA-MPL (⧫) and nonvaccinated animals (⋄).
