Impact of T cell-specific IL-17RA expression on the CD8+ T cell response during MHV68 infection. dLck Cre-positive and dLck Cre-negative mice were infected as for Fig. 2 with splenocytes, and peritoneal cells were analyzed at 16 days postinfection. (A and B) Frequency of CD8+ T cells, defined as CD3+ CD8+ cells, in the spleen and peritoneal cavity. (C and D) Frequency of MHV68-specific CD8+ T cells, defined as CD3+ CD8+ CD44+ Orf6 (MHC class I tetramer)+ cells, in the spleen and peritoneal cavity. (E and F) Frequency of IFN-γ-producing CD8+ T cells, defined as CD3+ CD8+ IFN-γ+ cells, following ex vivo restimulation with MHV68 immunodominant peptides in the spleen and peritoneal cavity. Data were pooled from 2 or 3 independent experiments, with each symbol representing an individual mouse. Means and standard errors of the means are shown. *, P < 0.05; **, P < 0.01.