Distribution of cell subsets within the BM ME of patients with MGUS, SMM, and MM. (A) UMAP plot of the cell populations identified in patient samples. (B) UMAP visualization of T-cell clusters in the BM. (C) Proportion and distribution of T-cell subsets in each patient. GMP, granulocyte-monocyte progenitor; gdt, γδ T cells; LMPP, lymphoid-primed multipotent progenitors; Mono, monocytes.