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Vaccination of badgers with BCG and challenged 13 weeks later with endobronchial M. bovis: IFNγ ELISPOT results from experiment VES3 (A,B) and VES4 (C,D) expressed as the net spot forming cells (SFC) per million cells in response to stimulation with PPD-B (A,C) or ESAT-6/CFP-10 (B,D).
