Finally, the plot shows a stronger possibility of interaction among immune cells, including B cells, DC, Macrophages, Mast cells, and T cells in the BC group, while the communication between LGALS9 and CD44, MDK and LRP1, and MIF and CD74+CXCR4/CD44 is unique to the BC group (Figure 4E). The gene discussed is LGALS9; the disease is breast cancer.