Inflammatory cell infiltration following CA/CPR. A: F4/80-positive cells are present in low levels in sham, maximally present 24 h after CA/CPR, and remain present at 1 week and 7 weeks. B: Inducible nitric oxide (iNOS)-positivity increasingly characterizes perivascular cells, suggesting increasing contribution of m1-phenotype macrophages. C: CD3-positive cells, not present in sham or immediately after CA/CPR, infiltrate by 1 week, and persist to 7 weeks after CA/CPR. D: Representative F4/80-stained renal cortex high-power images. Representative iNOS-stained renal cortex high-power images. Representative CD3-stained renal cortex high-power images. Bar graph columns are mean±SEM. Scale bars are 100μm.