The co-culture of apoptotic LN-229 increased the CD40+ GFP+ cell population to ~10% in the parental, SIRPα-negative and MERTK-negative cells, showing that microglial phagocytosis was more efficient on apoptotic glioblastoma cells (Figures 7B, C, S12). This evidence concerns the gene MERTK and glioblastoma.