To analyze whether anti‐angiogenic therapy affected a specific subpopulation of macrophages in mouse GBM, we stained AMG386‐, aflibercept‐treated, and control tumors for CD206 (macrophage mannose receptor/MMR) that is considered a marker for M2‐polarized macrophages (Fig 4J). The gene discussed is MRC1; the disease is glioblastoma.