MRC1 and glioblastoma: As shown in Fig. 6C, LAIR1 expression was positively correlated with many M2 microglia/macrophage markers, especially CD86, IL10, CD163, CD206 (MRC1), CCL5, C-C chemokine receptor type 5 (CCR5), and TGFβ1, in LGG and GBM tissues.