On day 14 after the induction of ischemia, CD8a−/− mice exposed to IFN‐γ loading (CD8a−/−‐rIFN‐γ mice) had markedly lowered blood perfusion and capillary density than CD8a−/−‐Saline mice (Figure 7A–D), which suggests that IFN‐γ lessened the angiogenesis in response to hypoxia. Here, CD8A is linked to ischemia.