WIPI1 and infection: The infection of stably expressing GFP-WIPI-1 U2OS cells with S. aureus HG001 in DMEM/FCS also triggered an elevation of GFP-WIPI-1 puncta-positive cells (up to 76%) (Figure 5(a), in green) and of GFP-WIPI-1 puncta per cell (Supplementary Figure  6(C)).