Collective DC activation is essential for the generation of T cell responses. (H) Flow cytometric quantification of CD44high H‑2Kb‑OVA tetramer+ CD8+ T cells in the draining lymph node of 90:10 and 5:95 (WT:Irf3‑/‑Irf7‑/‑) chimeric mice injected with PBS or OVA+poly(I:C). Data are pooled from 2 independent experiments. 