According to a manual annotation that referred to specialised databases, we identified nine T‐cell sub‐populations [regulatory T (Treg) cell, cytotoxic T cell, mucosa‐associated invariant T (MAIT) cell, natural killer T (NKT) cell, CD8+ T cell, gamma–delta T cell, memory CD8+ T cell and exhausted CD8+ T cell]in tumour sample (Figure 3C). The gene discussed is CD8A; the disease is neoplasm.