Utilising the algorithmic program CIBERSORT, Xu et al. (2019) performed immunophenotypic analysis on datasets retrieved from the gene expression omnibus (GEO) and TCGA platforms, and demonstrated that there was an increased level of M2-like Mφs (defined by the authors as CD206+ cells) in the BM of AML patients compared to normal BM counterparts. Here, MRC1 is linked to acute myeloid leukemia.