SPI1 and neoplasm: We confirmed the restriction of SOX2 expression to tumor cells, PTPRC/CD45 to immune cells, SPI1/PU.1, CD68, and CD163 to ‘macrophages’, CD3G to ‘T cells’, and OLIG1/2 and MBP to oligodendrocytes (Fig. 1A, B; Fig. S1a).