We analyzed twelve ESCC patients from the single‐cell RNA‐seq dataset GSE203067, which included four primary tumor samples, four adjacent normal tissue samples, three lymph nodes with metastasis samples, and one lymph node without metastasis sample.[30]CD8+CXCL13+ T cells accounted for 12% of the total cells in this cohort (Figure S15C, Supporting Information). The gene discussed is CXCL13; the disease is esophageal squamous cell carcinoma.