CD84 and infection: Infection with transgenic Listeria monocytogenes expressing NP68 (Lm‐NP68) induced stronger expansion and formation of larger KLRG1+IL‐7R− short‐lived effectors and KLRG1−IL‐7R+ memory‐precursor subsets in CD8.4 F5 than in CD8WT F5 T cells (Figs 1D and EV1B).