Figure 9. The two hub genes positively correlate with macrophage polarization in PAAD tissues. (A–D) The relationship between CXCR4 expression and biomarkers of monocytes, TAMs, M1 and M2 macrophages is shown. (E–H) The relationship between ZEB1 expression and biomarkers of monocytes, TAMs, M1 and M2 macrophages is shown. Note: Monocyte markers: CD86 and CSF1R; TAM markers: CCL2, CD68 and IL10; M1 macrophage markers: NOS2, IRF5 and PTGS2; M2 macrophage markers: CD163, VSIG4 and MS4A4A. Hub genes are shown on the x-axis, and the corresponding marker genes are shown on the y-axis.