Sheet-like protrusions in Arpc2−/− macrophage cells. IRSp53-EGFP localization in stimulated (100 nM PMA; −) 4-OHT wild type (left) and (+) 4-OHT Arpc2−/− (right) macrophage cells. TIRF-SIM imaging at one frame every 10 s. Scale bar: 10 µm. This video corresponds to Fig. 7 C.