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IFN-γ production in blood from six individual mice at 4 weeks after untreated TB infection. Blood samples were processed in IGRA. a Negative controls. b Mtb-specific-antigens responses after stimulation with ESAT-6 and CFP-10. c IGRA results (Mtb-specific-antigens responses minus the negative controls). d Positive controls. Data shown are mean IFN-γ concentrations of measurements in duplicate
