PDCD1 and glioblastoma: Our results showed that the presence of microglia in the GBM microenvironment could promote the PD-1 expression on allogeneic CD8+ T-cell (Figure 5—figure supplement 4A), but there was no significant change observed in GBM cell apoptosis response to the PD-1 and CSF-1R dual blockade treatment compared to the macrophage only system (Figure 5—figure supplement 4B&C).