Compared with healthy BM samples, some AML samples (AML420B.D0, AML420B.D15, AML420B.D31; AML328.D113, AML328.D171; AML707B.D18, AML707B.D41, AML707B.D97, AML707B.D113; AML870.D14) have higher proportions of CD4+ T cells (Cluster 0), which indicated that chemotherapy increased the frequency of CD4+ T cells with wiping out malignant cells. Here, CD4 is linked to acute myeloid leukemia.