AIF1 and Cerebral ischemia: To further investigate the interactions between neurons and phagocytes in the brain after cerebral ischemia, we classified all Iba1+ cells into four categories according to their contact size with NeuN+ neurons (see Section 2): no touch, touch, enwrap, and engulf (Figure 4D, Figure S1 and Videos [Link], [Link], [Link], [Link]).