Results obtained with an uninfected mouse analyzed in parallel as a control are shown in S1 Fig Seven days post infection (dpi), when the number and/or percentage of ET cells were still increasing; or one year after infection, when only ~2% of total splenic CD8+ T cells were specific for YopE69-77, the most prominent population was composed of Vβ8.1 and 8.2, with an average of 25% of all ET cells in this category (Fig 1A, left, and 1B). Here, CD8A is linked to infection.