LYZ and neoplasm: Furthermore, the population of epithelial cells showed higher diversity, with the presence of alveolar type II (AT2), atypical epithelial cells which downregulated epithelial markers (KRT19, EPCAM, CDH1), transitioning epithelial cells which upregulated myeloid markers (LYZ), and cycling epithelial cells in tumour tissues (Fig. 1G, Supplementary Notes, and Supplementary Fig. 2D, E).