When analyzing mRNA expression of autoimmune-related genes in the lung tissue, MCs were the only type of all studied cells (MCs, neutrophils, macrophages, exhausted CD8+, CD8+ T cells, dendritic cells, cytotoxic cells, B-cells, CD45 cells and T-cells) that were highly expressed in patients with SARS-CoV-2 pneumonia compared to influenza [69]. Here, CD8A is linked to influenza.