CD274 and esophageal squamous cell carcinoma: using scRNAseq data from 60 ESCC tumors showed that from the myeloid cells identified in the ESCC TME, tolerogenic dendritic cells (tDCs), expressing high levels of PD‐L1 and PD‐L2, showed the most ligand/receptor interactions with CD8 T‐cell subsets compared to other DC subtypes present.