KRT18 and neoplasm: We identified 53 cell clusters, including: 9 malignant clusters (based on enrichment in tumor samples), 6 lung epithelial clusters (EPCAM, KRT18), 2 stromal clusters (VWF, PECAM1, COL1A2, FBLN1), 15 T cell clusters (CD3D, CD8A, CD4), 4 NK cell/ILC clusters (NCR1), 15 myeloid clusters (CD14, LYZ, HLA-DQA1, KIT), 1 B cell cluster (MS4A1, PAX5), and 1 plasma cell cluster (TNFRSF17, Figures 1E and S2A).