scRNA-Seq of PDGFB and Nf1 mGBM revealed that Nf1 mGBM cells are more prominent contributors to the total pool of MCP transcripts compared with PDGFB tumor cells (Supplemental Figure 16), further supporting the observation that Nf1-silenced mGBM cells express high levels of MCPs to recruit monocytes. Here, NF1 is linked to neoplasm.