CD8A and infection: We measured antigen-specific T cell responses elicited by infection with theisogenic strains Erd.EsxHWT and Erd.EsxHA10T, usingspecific tetramers (i.e., the WTTB10.44−11/Kband A10TTB10.44−11/Kb tetramers, respectively).After Erd.EsxHA10T infection, there was a significant reduction inthe TB10.44−11-specific CD8 T cell response in C57BL/6J, as observedafter 667 infection (Fig 4A and4B).