Histogram of the proportion of 22 types of immune cells and blasts in the BM from 316 patients with MDS and scatter plots depicting correlation between blast and immune cell percentages. There was an incremental trend of blast percentages along with a decrease in M0 macrophages (A, left to right) but an increase in M2 macrophage (B) and eosinophils (C). Pearson’s correlation (D) revealed weak to moderate yet significant correlations between blast percentages and M0 and M2 macrophages and eosinophils, respectively.