Aortas and mesenteric vascular arcades from young normal chow (YNC), old- (O) normal chow (NC), voluntary running (VR) and calorie restricted (CR) mice were digested to a single cell suspension and incubated with antibodies against CD45 and CD3 to assess total T cells in aorta (A) and mesentery (B); CD45 and CD19 to assess total B cells in aorta (C) and mesentery (D) and; CD45, CD11b and F4/80 to assess total macrophages in aorta (E) and mesentery (F). Representative flow cytometry plots are shown on the left of each panel, summary data is shown on the right. n = 5–11/group. Differences were assessed with one-way ANOVA with LSD post hoc tests. * different from YNC, † different from ONC, p ≤ 0.05. Data are means ± SEM. Adapted with permission from Trott et al., (2018).