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Relationships between hypoxia risk score and immune checkpoint molecules. (A, G) Heatmaps show the expression level of immune checkpoint molecules in high-risk and low-risk groups in the screening and validation cohorts (*P < 0.05; **P < 0.01; ***P < 0.001). Scatter plots and box plots show the relationship between the risk score and the expression level of (B, H) PD-1, (C, I) HAVCR2, (D, J) TGF-β, (E, K) PD-L1, and (F, L) CTLA4 in the screening and validation cohorts.
