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The graphic shows the determination of the IFN-γ release by ELISA (expressed as ΔOD450 ± CI) in plasma supernatants after blood stimulation with (A) M. bovis PPD (PPD-B), (B) ESAT-6/CFP-10 recombinant antigens mixture, (C) PC-HP cocktail and (D) PC-EC cocktail in unvaccinated control (n = 6), BCG vaccinated (n = 6) and HIMB vaccinated (n = 6) lambs.
