DPEP2 and neoplasm: Figure 8E illustrates the different clusters of cell-associated markers. We further validated DPEP2 expression in GSE162669 and found a higher DPEP2 level in normal alveolar macrophages than in tumor-associated macrophages (Figure S4). Enrichment analysis was conducted by Metascape and was consistent with previous GO, KEGG, and GSEA enrichment analyses in terms of factors such as the inflammatory response and leukocyte chemotaxis. (Figure 8F,G).