TGFBR2 and diffuse large B-cell lymphoma: Ligand–receptor interaction analysis showed that compared with BAMBIlow DLBCL cells, BAMBIhigh DLBCL cells had stronger TGFB1‐TGFBR2 pair interactions with CD4effector, CD4Treg, and CD4Th1 clusters (Figure 8G).