PTPRC and neoplasm: Consequently, 65 ROIs represented tumor cells (PanCK-expressing), 36 ROIs represented immune cells (CD45-expressing), and 6 ROIs represented normal epithelial cells (NC), as shown in Fig. 1A. The number of regions exhibiting differential gene expression was 3515 (PanCK- vs. CD45-expressing regions), as demonstrated in Fig. 1B. GO and KEGG enrichment analyses were used to investigate these differentially expressed genes (DEGs).