The difference result (Figure 5B) found that there are significant differences in immune characteristics among the subtypes: CD8 T cells, resting memory CD4 T cells, macrophages M0, macrophages M1, macrophages M2, etc. are all significantly higher in the subtypes, indicating that they may play an important role in triple-negative breast cancer. This evidence concerns the gene CD4 and triple-negative breast carcinoma.